@article{dumitru_kovner_skokov_2023, title={Entanglement entropy of the proton in coordinate space}, url={https://doi.org/10.1103/PhysRevD.108.014014}, DOI={10.1103/PhysRevD.108.014014}, abstractNote={We calculate the entanglement entropy of a model proton wave function in coordinate space by integrating out degrees of freedom outside a small circular region $\bar A$ of radius $L$, where $L$ is much smaller than the size of the proton. The wave function provides a nonperturbative distribution of three valence quarks. In addition, we include the perturbative emission of a single gluon and calculate the entanglement entropy of gluons in $\bar A$. For both, quarks and gluons we obtain the same simple result: $S_E =-\int\frac{dx}{\Delta x}\, N_{L^2}(x)\log[N_{a^2}(x)]$, where $a$ is the UV cutoff in coordinate space and $\Delta x$ is the longitudinal resolution scale. Here $N_{S}(x)$ is the number of partons (of the appropriate species) with longitudinal momentum fraction $x$ inside an area $S$. It is related to the standard parton distribution function (PDF) by $N_S(x)=\frac{S}{A_p}\, \Delta x\, F(x)$, where $A_p$ denotes the transverse area of the proton.}, journal={Physical Review D}, author={Dumitru, Adrian and Kovner, Alex and Skokov, Vladimir V.}, year={2023}, month={Jul} }
@article{kovner_li_skokov_2023, title={Probing gluon Bose correlations in nuclear wave function in deep inelastic scattering}, url={https://doi.org/10.1103/PhysRevD.107.114032}, DOI={10.1103/PhysRevD.107.114032}, abstractNote={We extend the results of A. Kovner, M. Li, and V. V. Skokov [Phys. Rev. Lett. 128, 182003 (2022)], where we argued that in the controlled environment of the deep inelastic scattering experiments, Bose-Einstein correlation between gluons in a hadronic wave function can be accessed through the production of the diffractive dijet plus a third jet. In this observable, Bose-Einstein correlation causes the enhancement of the production cross sections at the zero relative angle between the transverse momentum imbalance of the photon-going dijet and the transverse momentum of the gluon jet, when the magnitude of the momentum imbalance is about the same as the magnitude of the produced gluon. In the present paper, we account for multiple scattering and nonlinear effect in the target wave function. Although our equations can be applied to any high-energy DIS kinematics, to make them tractable numerically, we consider the high-momentum limit (momentum larger than ${Q}_{s}$) for the total momentum of the dijet, momentum imbalance, and the momentum of the produced gluon. By performing explicit numerical calculations, we confirm that the signal is present after accounting for multiple scattering.}, journal={Physical Review D}, author={Kovner, Alex and Li, Ming and Skokov, Vladimir V.}, year={2023}, month={Jun} }
@article{johnson_rennecke_skokov_2023, title={Universal location of Yang-Lee edge singularity in classic O(N) universality classes}, url={https://doi.org/10.1103/PhysRevD.107.116013}, DOI={10.1103/PhysRevD.107.116013}, abstractNote={Employing the functional renormalization group approach at next-to-leading order of the derivative expansion, we refine our earlier findings for the location of the Yang-Lee edge singularity in classic $\mathrm{O}(N)$ universality classes. For the universality classes of interest to QCD, in three dimensions, we found $|{z}_{c}|/{R}_{\ensuremath{\chi}}^{1/\ensuremath{\gamma}}=1.612(9),1.597(3)$ for $N=2$, 4 correspondingly. We also established $|{z}_{c}|=2.04(8),1.69(3)$ for $N=2$, 4 albeit with greater systematic error.}, journal={Physical Review D}, author={Johnson, Gregory and Rennecke, Fabian and Skokov, Vladimir V.}, year={2023}, month={Jun} }
@article{mukherjee_rennecke_skokov_2022, title={Analytical structure of the equation of state at finite density: Resummation versus expansion in a low energy model}, volume={105}, ISSN={["2470-0029"]}, DOI={10.1103/PhysRevD.105.014026}, abstractNote={For theories plagued with a sign problem at finite density, a Taylor expansion in the chemical potential is frequently used for lattice gauge theory based computations of the equation of state. Recently, in arXiv:2106.03165, a new resummation scheme was proposed for such an expansion that resums contributions of correlation functions of conserved currents to all orders in the chemical potential. Here, we study the efficacy of this resummation scheme using a solvable low energy model, namely the mean-field quark-meson model. After adapting the scheme for a mean-field analysis, we confront the results of this scheme with the direct solution of the model at finite density as well as compare with results from Taylor expansions. We study to what extent the two methods capture the analytical properties of the equation of state in the complex chemical potential plane. As expected, the Taylor expansion breaks down as soon as the baryon chemical potential reaches the radius of convergence defined by the Yang-Lee edge singularity. Encouragingly, the resummation not only captures the location of the Yang-Lee edge singularity accurately, but is also able to describe the equation of state for larger chemical potentials beyond the location of the edge singularity for a wide range of temperatures.}, number={1}, journal={PHYSICAL REVIEW D}, author={Mukherjee, Swagato and Rennecke, Fabian and Skokov, V. Vladimir}, year={2022}, month={Jan} }
@article{duan_kovner_skokov_2022, title={CGC for ultra-peripheral Pb plus Pb collisions at the Large Hadron Collider: a more realistic calculation}, volume={12}, ISSN={["1029-8479"]}, DOI={10.1007/JHEP12(2022)077}, abstractNote={We provide the first calculation of two-gluon production at mid-rapidity in ultra-peripheral collisions in the Color Glass Condensate framework. To estimate systematic uncertainty associated with poor understanding of the wave function of the nearly real photon, we consider two diametrically different models: the dilute quark-antiquark dipole approximation and a vector meson, in which color charge density is approximated by McLerran-Venugopalan model. In the experimentally relevant range, the target nucleus can be faithfully approximated by a highly saturated state. This simplification enables us to perform efficient numerical simulations and extract the two-gluon correlation functions and the associated azimuthal harmonics.}, number={12}, journal={JOURNAL OF HIGH ENERGY PHYSICS}, author={Duan, Haowu and Kovner, Alexander and Skokov, Vladimir V.}, year={2022}, month={Dec} }
@article{schafer_skokov_2022, title={Dynamics of non-Gaussian fluctuations in model A}, volume={106}, ISSN={["2470-0029"]}, url={https://doi.org/10.1103/PhysRevD.106.014006}, DOI={10.1103/PhysRevD.106.014006}, abstractNote={Motivated by the experimental search for the QCD critical point we perform simulations of a stochastic field theory with purely relaxational dynamics (model A). We verify the expected dynamic scaling of correlation functions. Using a finite size scaling analysis we obtain the dynamic critical exponent $z=2.026(56)$. We investigate time dependent correlation functions of higher moments $M^n(t)$ of the order parameter $M(t)$ for $n=1,2,3,4$. We obtain dynamic scaling with the same critical exponent $z$ for all $n$, but the relaxation constant depends on $n$. We also study the relaxation of $M^n(t)$ after a quench, where the simulation is initialized in the high temperature phase, and the dynamics is studied at the critical temperature $T_c$. We find that the evolution does not follow simple scaling with the dynamic exponent $z$, and that it involves an early time rise followed by late stage relaxation.}, number={1}, journal={PHYSICAL REVIEW D}, author={Schafer, Thomas and Skokov, Vladimir}, year={2022}, month={Jul} }
@article{li_skokov_2022, title={First saturation correction in high energy proton-nucleus collisions. Part III. Ensemble averaging}, volume={1}, ISSN={["1029-8479"]}, DOI={10.1007/JHEP01(2022)160}, abstractNote={In high energy proton-nucleus collisions, the gluon saturation effects from the nucleus are fully incorporated into the light-like Wilson lines. The gluon saturation effects from the proton, which are anticipated to be important either in the extreme high energy limit or towards the dense-dense (nucleus-nucleus) collision regimes, have been studied perturbatively within the Color Glass Condensate effective theory in previous papers of this series. A configuration-by-configuration expression for the single inclusive semi-hard gluon production including the first saturation correction was obtained. In this paper, we perform ensemble averaging in the McLerran-Venugopalan model and the Dipole Approximation. We find that, in the saturation correction, the effects of the initial state interactions are negligible while the final state interactions play most important role and give a positive-valued contribution to the semi-hard gluon spectrum. Furthermore, we show that the single gluon spectrum scales approximately $1/k_{\perp}^{4}$ at small $k_{\perp}$, suggesting that a resummation of higher order saturation corrections is required to regulate the infrared region of the gluon spectrum.}, number={1}, journal={JOURNAL OF HIGH ENERGY PHYSICS}, author={Li, Ming and Skokov, Vladimir V.}, year={2022}, month={Jan} }
@article{duan_kovner_skokov_2022, title={Gluon quasiparticles and the CGC density matrix}, volume={105}, ISSN={["2470-0029"]}, DOI={10.1103/PhysRevD.105.056009}, abstractNote={We revisit and extend the calculation of the density matrix and entanglement entropy of a color glass condensate (CGC) by including the leading saturation corrections in the calculation. We show that the density matrix is diagonal in the quasiparticle basis, where it has the Boltzmann form. The quasiparticles in a wide interval of momenta behave as massless two-dimensional bosons with the temperature proportional to the typical semihard scale $T={Q}_{s}/\sqrt{{\ensuremath{\alpha}}_{s}{N}_{c}}$. Thus, the semihard momentum region ${Q}_{s}αs2μ2 , where μ 2 is the proton’s color charge squared per unit transverse area) has not been completely derived despite recent attempts using a diagrammatic approach. This paper is the first in a series of papers towards analytically completing the first saturation correction to physical observables in high energy proton-nucleus collisions. Our approach is to analytically solve the classical Yang-Mills equations in the dilute-dense regime using the Color Glass Condensate effective theory and compute physical observables constructed from classical gluon fields. In the current paper, the Yang-Mills equations are solved perturbatively in the field of the dilute object (the proton). Next-to-leading order and next-to-next-to-leading order analytic solutions are explicitly constructed. A systematic way to obtain all higher order analytic solutions is outlined.}, number={6}, journal={JOURNAL OF HIGH ENERGY PHYSICS}, author={Li, Ming and Skokov, Vladimir V.}, year={2021}, month={Jun} }
@article{li_skokov_2021, title={First saturation correction in high energy proton-nucleus collisions. Part II. Single inclusive semi-hard gluon production}, volume={6}, ISSN={["1029-8479"]}, DOI={10.1007/JHEP06(2021)141}, abstractNote={Exploiting recently obtained analytic solutions of classical Yang-Mills equations for higher order perturbations in the field of the dilute object (proton), we derive the complete first saturation correction to the single inclusive semi-hard gluon production in high energy proton-nucleus collisions by applying the Lehmann-Symanzik-Zimmermann reduction formula. We thus finalize the program started by Balitsky (see Ref.~\cite{Balitsky:2004rr}) and independently by Chirilli, Kovchegov and Wertepny (see Ref.~\cite{Chirilli:2015tea}) albeit using a very different approach to carry out our calculations. We extracted the functional dependence of gluon spectrum on the color charge densities of the colliding objects; thus our results can be used to evaluate complete first saturation correction to the double/multiple inclusive gluon productions.}, number={6}, journal={JOURNAL OF HIGH ENERGY PHYSICS}, author={Li, Ming and Skokov, Vladimir V.}, year={2021}, month={Jun} }
@article{behtash_kamata_martinez_schafer_skokov_2021, title={Transasymptotics and hydrodynamization of the Fokker-Planck equation for gluons}, volume={103}, ISSN={["2470-0029"]}, url={https://doi.org/10.1103/PhysRevD.103.056010}, DOI={10.1103/PhysRevD.103.056010}, abstractNote={We investigate the non-linear transport processes and hydrodynamization of a system of gluons undergoing longitudinal boost-invariant expansion. The dynamics is described within the framework of the Boltzmann equation in the small-angle approximation. The kinetic equations for a suitable set of moments of the one-particle distribution function are derived. By investigating the stability and asymptotic resurgent properties of this dynamical system, we demonstrate, that its solutions exhibit a rather different behavior for large (UV) and small (IR) effective Knudsen numbers. Close to the forward attractor in the IR regime the constitutive relations of each moment can be written as a multiparameter transseries. This resummation scheme allows us to extend the definition of a transport coefficient to the non-equilibrium regime naturally. Each transport coefficient is renormalized by the non-perturbative contributions of the non-hydrodynamic modes. The Knudsen number dependence of the transport coefficient is governed by the corresponding renormalization group flow equation. An interesting feature of the Yang-Mills plasma in this regime is that it exhibits transient non-Newtonian behavior while hydrodynamizing. In the UV regime the solution for the moments can be written as a power-law asymptotic series with a finite radius of convergence. We show that radius of convergence of the UV perturbative expansion grows linearly as a function of the shear viscosity to entropy density ratio. Finally, we compare the universal properties in the pullback and forward attracting regions to other kinetic models including the relaxation time approximation and the effective kinetic Arnold-Moore-Yaffe (AMY) theory.}, number={5}, journal={PHYSICAL REVIEW D}, publisher={American Physical Society (APS)}, author={Behtash, A. and Kamata, S. and Martinez, M. and Schafer, T. and Skokov, V}, year={2021}, month={Mar} }
@article{connelly_johnson_mukherjee_skokov_2021, title={Universality driven analytic structure of QCD crossover: radius of convergence and QCD critical point}, volume={1005}, ISSN={["1873-1554"]}, DOI={10.1016/j.nulphysa.2020.121834}, journal={NUCLEAR PHYSICS A}, author={Connelly, Andrew and Johnson, Gregory and Mukherjee, Swagato and Skokov, Vladimir}, year={2021}, month={Jan} }
@article{mukherjee_skokov_2021, title={Universality driven analytic structure of the QCD crossover: Radius of convergence in the baryon chemical potential}, url={https://doi.org/10.1103/PhysRevD.103.L071501}, DOI={10.1103/PhysRevD.103.L071501}, abstractNote={Recent lattice QCD calculations strongly indicate that the chiral crossover of QCD at zero baryon chemical potential \mu_B is a remnant of the second-order chiral phase transition. Universal properties of this second-order phase transition can be mapped to QCD temperature T and \mu_B using non-universal parameters determined by lattice QCD recently. Motivated by these results, first, we discuss the analytic structure of the partition function in the QCD crossover regime - the so-called Yang-Lee edge singularity - solely based on universal properties. Next, utilizing the lattice QCD results for non-universal parameters we map this singularity to the real T and complex \mu_B plane, leading to the determination of the radius of convergence is in \mu_B in the QCD crossover regime. These universality- and QCD-based results provide tight constraints on the range of validity of the lattice QCD calculations at \mu_B. Implication of this result on the location of the conjectured QCD critical point is discussed.}, journal={Physical Review D}, author={Mukherjee, Swagato and Skokov, Vladimir}, year={2021}, month={Apr} }
@article{korthals altes_nishimura_pisarski_skokov_2020, title={Conundrum for the free energy of a holonomous gluonic plasma at cubic order}, volume={803}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85080894508&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2020.135336}, abstractNote={We compute the term $\sim g^3$ in the free energy for a $SU(N)$ gauge theory with nonzero holonomy at nonzero temperature. If the holonomy is generated kinematically by the introduction of gauge invariant sources coupled to Polyakov loops, the contribution of charged (off-diagonal) gluons to the free energy at order $g^3$, ${\cal F}^{\left( 3\rm{:c.g.} \right)}$, is singular: ${\cal F}^{\left( 3\rm{:c.g.} \right)} \neq 0 $ without holonomy, but ${\cal F}^{\left( 3 \rm{:c.g.} \right)}= 0$ when the holonomy is nonzero, even infinitesimally. We show that the absence of the charged gluon contribution is required by gauge invariance alone and is therefore a universal feature.}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Korthals Altes, C.P. and Nishimura, H. and Pisarski, R.D. and Skokov, V.V.}, year={2020} }
@article{duan_akkaya_kovner_skokov_2020, title={Entanglement, partial set of measurements, and diagonality of the density matrix in the parton model}, volume={101}, url={https://doi.org/10.1103/PhysRevD.101.036017}, DOI={10.1103/PhysRevD.101.036017}, abstractNote={We define the "entropy of ignorance" which quantifies the entropy associated with ability to perform only a partial set of measurement on a quantum system. For a parton model the entropy of ignorance is equal to a Boltzmann entropy of a classical system of partons. We analyze a calculable model used for describing low x gluons in Color Glass Condensate approach, which has similarities with the parton model of QCD. In this model we calculate the entropy of ignorance in the particle number basis as well as the entanglement entropy of the observable degrees of freedom. We find that the two are similar at high momenta, but differ by a factor of order unity at low momenta. This holds for the Renyi as well as von Neumann entropies. We conclude that the entanglement does not seem to play an important role in the context of the parton model.}, number={3}, journal={Physical Review D}, author={Duan, Haowu and Akkaya, Candost and Kovner, Alex and Skokov, Vladimir V.}, year={2020}, month={Feb}, pages={036017} }
@article{reshetnikov_busov_kapitunov_skokov_2020, title={Explosive boiling-up in a swirl jet of superheated ethanol}, volume={149}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85076779113&partnerID=MN8TOARS}, DOI={10.1016/j.ijheatmasstransfer.2019.119210}, abstractNote={Abstract Based on the knowledge of the kinetics of liquid vaporization under conditions of high and attainable superheats, experimental data on the atomization of a jet of boiling ethanol at various speeds of a flow swirl are discussed. It has been stated that under conditions of low superheats and boiling-up on solitary non-interacting heterogeneous sites, the rotation of the flow is considered to be the decisive factor in the atomization process. At high superheats and the realization of the mechanism of intense heterogeneous vaporization, the effect of boiling-up on the jet disintegration becomes dominant. When establishing conditions for explosive boiling-up (homogeneous nucleation) under attainable superheats, a complete jet breakup was observed both without a swirl and at low swirl speeds. With an increase in the swirl speed, the temperature range of the breakup narrowed. With a strong swirl the breakup disappeared completely. In the initial states of ethanol close to the thermodynamic critical point, the jet shape was similar to a gas one with or without a swirl. The 1/f fluctuations revealed were caused by oscillations (nutation) of the precessional motion of the jet. They indicate a possibility of large-scale outbursts in the jet.}, journal={International Journal of Heat and Mass Transfer}, author={Reshetnikov, A.V. and Busov, K.A. and Kapitunov, O.A. and Skokov, V.N.}, year={2020} }
@article{altes_nishimura_pisarski_skokov_2020, title={Free energy of a holonomous plasma}, volume={101}, ISSN={["1550-2368"]}, DOI={10.1103/PhysRevD.101.094025}, abstractNote={At a nonzero temperature T, a constant field $\overline{A}_0 \sim T/g$ generates nontrivial eigenvalues of the thermal Wilson line. We discuss contributions to the free energy of such a holonomous plasma when the coupling constant, $g$, is weak. We review the computation to $\sim g^2$ by several alternate methods, and show that gauge invariant sources, which are nonlinear in the gauge potential $A_0$, generate novel contributions to the gluon self energy at $\sim g^2$. These ensure the gluon self energy remains transverse to $\sim g^2$, and are essential in computing contributions to the free energy at $\sim g^3$ for small holonomy, $\overline{A}_0 \sim T$. We show that the contribution $\sim g^3$ from off-diagonal gluons is discontinuous as the holonomy vanishes. The contribution from diagonal gluons is continuous as the holonomy vanishes, but sharply constrains the possible sources which generate nonzero holonomy, and must involve an infinite number of Polyakov loops.}, number={9}, journal={PHYSICAL REVIEW D}, author={Altes, Chris P. Korthals and Nishimura, Hiromichi and Pisarski, Robert D. and Skokov, Vladimir V.}, year={2020}, month={May} }
@article{schlichting_skokov_2020, title={Saturation corrections to dilute-dense particle production and azimuthal correlations in the Color Glass Condensate}, volume={806}, ISSN={["1873-2445"]}, DOI={10.1016/j.physletb.2020.135511}, abstractNote={We perform a numerical study of higher order saturation corrections to the dilute-dense approximation for multi-particle production in high-energy hadronic collisions in the framework of the Color Glass Condensate. We compare semi-analytical results obtained by performing a leading order expansion in the dilute field of the projectile with numerical simulations of the full Classical Yang-Mills dynamics for a number of phenomenologically relevant observables. By varying the saturation momentum of the target and the projectile, we establish the regime of validity of the dilute-dense approximation and assess the magnitude and basic features of higher order saturation corrections. In particular, we find that dilute-dense approximation faithfully reproduces dense-dense results if restricted to the range of its validity.}, journal={PHYSICS LETTERS B}, author={Schlichting, S. and Skokov, V}, year={2020}, month={Jul} }
@article{dumitru_skokov_stebel_2020, title={Subfemtometer scale color charge correlations in the proton}, volume={101}, ISSN={["1550-2368"]}, DOI={10.1103/PhysRevD.101.054004}, abstractNote={Color charge correlations in the proton at moderately small $x\ensuremath{\sim}0.1$ are extracted from its light-cone wave function. The charge fluctuations are far from Gaussian and they exhibit interesting dependence on the impact parameter and on the relative transverse momentum (or distance) of the gluon probes. We provide initial conditions for small-$x$ Balitsky-Kovchegov evolution of the dipole scattering amplitude with impact parameter and $\stackrel{^}{r}\ifmmode\cdot\else\textperiodcentered\fi{}\stackrel{^}{b}$ dependence, and with a nonzero $C$-odd component due to three-gluon exchange. Lastly, we compute the (forward) Weizs\"acker-Williams gluon distributions, including the distribution of linearly polarized gluons, up to fourth order in ${A}^{+}$. The correction due to the quartic correlator provides a transverse momentum scale, $q\ensuremath{\gtrsim}0.5\text{ }\text{ }\mathrm{GeV}$, for nearly maximal polarization.}, number={5}, journal={PHYSICAL REVIEW D}, author={Dumitru, Adrian and Skokov, Vladimir and Stebel, Tomasz}, year={2020}, month={Mar} }
@article{connelly_johnson_rennecke_skokov_2020, title={Universal Location of the Yang-Lee Edge Singularity in O(N) Theories}, url={https://doi.org/10.1103/PhysRevLett.125.191602}, DOI={10.1103/PhysRevLett.125.191602}, abstractNote={We determine a previously unknown universal quantity, the location of the Yang-Lee edge singularity for the O($N$) theories in a wide range of $N$ and various dimensions. At large $N$, we reproduce the $N\to\infty$ analytical result on the location of the singularity and, additionally, we obtain the mean-field result for the location in $d=4$ dimensions. In order to capture the nonperturbative physics for arbitrary $N$, $d$ and complex-valued external fields, we use the functional renormalization group approach.}, journal={Physical Review Letters}, author={Connelly, Andrew and Johnson, Gregory and Rennecke, Fabian and Skokov, Vladimir V.}, year={2020}, month={Nov} }
@misc{pisarski_skokov_tsvelik_2019, title={A Pedagogical Introduction to the Lifshitz Regime}, volume={5}, ISSN={["2218-1997"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85064408239&partnerID=MN8TOARS}, DOI={10.3390/universe5020048}, abstractNote={We give an elementary and pedagogical review of the phase diagrams which are possible in quantum chromodynamics (QCD). Herein, emphasis is upon the appearance of a critical endpoint, where disordered and ordered phases meet. In many models, though, a Lifshitz point also arises. At a Lifshitz point, three phases meet: disordered, ordered, and one in which spatially inhomogeneous phases arise. At the level of mean field theory, the appearance of a Lifshitz point does not dramatically affect the phase diagram. We argue, however, that fluctuations about the Lifshitz point are very strong in the infrared and significantly alter the phase diagram. We discuss at length the analogy to inhomogeneous polymers, where the Lifshitz regime produces a bicontinuous microemulsion. We briefly mention the possible relevance to the phase diagram of QCD.}, number={2}, journal={UNIVERSE}, author={Pisarski, Robert D. and Skokov, Vladimir V. and Tsvelik, Alexei}, year={2019}, month={Feb} }
@article{shaprynski?_skokov_vernikov_2019, title={Cancellable elements of the lattices of varieties of semigroups and epigroups}, volume={47}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85064676480&partnerID=MN8TOARS}, DOI={10.1080/00927872.2019.1590585}, abstractNote={AbstractWe completely determine all semigroup [epigroup] varieties that are cancellable elements of the lattice of all semigroup [respectively epigroup] varieties.}, number={11}, journal={Communications in Algebra}, author={Shaprynski?, V.Y. and Skokov, D.V. and Vernikov, B.M.}, year={2019}, pages={4697–4712} }
@article{martinez_schäfer_skokov_2019, title={Critical behavior of the bulk viscosity in QCD}, volume={100}, url={https://doi.org/10.1103/PhysRevD.100.074017}, DOI={10.1103/PhysRevD.100.074017}, abstractNote={We study the behavior of the bulk viscosity $\zeta$ in QCD near a possible critical endpoint in the phase diagram. We verify the expectation that $(\zeta/s)\sim a(\xi/\xi_0)^{x_\zeta}$, where $s$ is the entropy density, $\xi$ is the correlation length, $\xi_0$ is the non-critical correlation length, $a$ is a constant and $x_\zeta\simeq 3$. Using a recently developed equation of state that includes a critical point in the universality class of the Ising model we estimate the constant of proportionality $a$. We find that $a$ is typically quite small, $a\sim O(10^{-4})$. We observe, however, that the result is sensitive to the commonly made assumption that the Ising temperature axis is approximately aligned with the QCD baryon chemical potential axis. If this is not the case, then the critical $\zeta/s$ can approach the non-critical value of $\eta/s$, where $\eta$ is the shear viscosity, even if the enhancement of the correlation length is modest, $\xi/\xi_0\sim 2$.}, number={7}, journal={Physical Review D}, publisher={American Physical Society (APS)}, author={Martinez, M. and Schäfer, T. and Skokov, V.}, year={2019}, month={Oct}, pages={074017} }
@article{koverda_skokov_2019, title={Dynamical Chaos in a Nonlinear System with 1/f Spectrum}, volume={45}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85076486397&partnerID=MN8TOARS}, DOI={10.1134/S1063785019110233}, number={11}, journal={Technical Physics Letters}, author={Koverda, V.P. and Skokov, V.N.}, year={2019}, pages={1159–1162} }
@article{mace_skokov_tribedy_venugopalan_2019, title={Erratum: Hierarchy of Azimuthal Anisotropy Harmonics in Collisions of Small Systems from the Color Glass Condensate (Physical Review Letters (2018) (121) (052301) DOI: 10.1103/PhysRevLett.123.052301)}, volume={123}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85069973752&partnerID=MN8TOARS}, DOI={10.1103/PhysRevLett.123.039901}, abstractNote={Received 13 June 2019DOI:https://doi.org/10.1103/PhysRevLett.123.039901Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI.Published by the American Physical SocietyPhysics Subject Headings (PhySH)Research AreasCollective flowParticle correlations & fluctuationsQuark-gluon plasmaRelativistic heavy-ion collisionsNuclear PhysicsParticles & Fields}, number={3}, journal={Physical Review Letters}, author={Mace, M. and Skokov, V.V. and Tribedy, P. and Venugopalan, R.}, year={2019} }
@article{pisarski_skokov_tsvelik_2019, title={Fluctuations in cool quark matter and the phase diagram of quantum chromodynamics}, volume={99}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85065189888&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.99.074025}, abstractNote={We consider the phase diagram of hadronic matter as a function of temperature, T , and baryon chemical potential, mu. Currently the dominant paradigm is a line of first order transitions which ends at a critical endpoint. In this work we suggest that spatially inhomogenous phases are a generic feature of the hadronic phase diagram at nonzero mu and low T . Familiar examples are pion and kaon condensates. At higher densities, we argue that these condensates connect onto chiral spirals in a quarkyonic regime. Both of these phases exhibit the spontaneous breaking of a global U(1) symmetry and quasi-long range order, analogous to smectic liquid crystals. We argue that there is a continuous line of first order transitions which separate spatially inhomogenous from homogenous phases, where the latter can be either a hadronic phase or a quark-gluon plasma. While mean field theory predicts that there is a Lifshitz point along this line of first order transitions, in three spatial dimensions strong infrared fluctuations wash out any Lifshitz point. Using known results from inhomogenous polymers, we suggest that instead there is a Lifshitz regime. Non-perturbative effects are large in this regime, where the momentum dependent terms for the propagators of pions and associated modes are dominated not by terms quadratic in momenta, but quartic. Fluctuations in a Lifshitz regime may be directly relevant to the collisions of heavy ions at (relatively) low energies, sqrt(s)/A : 1 to 20 GeV.}, number={7}, journal={Physical Review D}, author={Pisarski, Robert D. and Skokov, Vladimir V. and Tsvelik, Alexei M.}, year={2019}, pages={074025} }
@article{reshetnikov_busov_mazheiko_skokov_2019, title={Jets of boiling-up water injected by a short slit nozzle}, volume={130}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85055752174&partnerID=MN8TOARS}, DOI={10.1016/j.ijheatmasstransfer.2018.10.102}, abstractNote={• Sheet expansion of boiling-up water was much faster in the direction of the short side of a rectangular nozzle. • An adjacent plane in the nozzle exit cross-section led to full jet opening and crisis behavior of a jet recoil. • Transition modes of boiling jet behavior were revealed by 1/f fluctuations. • Influence of a flow swirl on boiling liquid sheet behavior was insignificant.}, journal={International Journal of Heat and Mass Transfer}, author={Reshetnikov, A.V. and Busov, K.A. and Mazheiko, N.A. and Skokov, V.N.}, year={2019}, pages={523–531} }
@article{dumitru_skokov_ullrich_2019, title={Measuring the Weizsacker-Williams distribution of linearly polarized gluons at an electron-ion collider through dijet azimuthal asymmetries}, volume={99}, ISSN={["2469-9993"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85060990019&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.99.015204}, abstractNote={The production of a hard dijet with small transverse momentum imbalance in semi-inclusive DIS probes the conventional and linearly polarized Weizs\"acker-Williams (WW) transverse momentum dependent (TMD) gluon distributions. The latter, in particular, gives rise to an azimuthal dependence of the dijet cross section. In this paper we analyze the feasibility of a measurement of these TMDs through dijet production in DIS on a nucleus at an electron-ion collider. We introduce the mcdijet Monte Carlo generator to sample quark-antiquark dijet configurations based on leading-order parton level cross sections with WW gluon distributions that solve the nonlinear small-$x$ QCD evolution equations. These configurations are fragmented to hadrons using PYTHIA, and final-state jets are reconstructed. We report on background studies and on the effect of kinematic cuts introduced to remove beam jet remnants. We estimate that with an integrated luminosity of 20 ${\mathrm{fb}}^{\ensuremath{-}1}/\mathrm{nucleon}$ one can determine the distribution of linearly polarized gluons with a statistical accuracy of approximately 5%.}, number={1}, journal={PHYSICAL REVIEW C}, author={Dumitru, Adrian and Skokov, Vladimir and Ullrich, Thomas}, year={2019}, month={Jan} }
@inproceedings{skokov_2019, title={Measuring the Weizsäcker-Williams distribution of linearly polarized gluons at an electron-ion collider through dijet azimuthal asymmetries}, volume={352}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85076433958&partnerID=MN8TOARS}, booktitle={Proceedings of Science}, author={Skokov, V.}, year={2019} }
@article{dusling_mace_skokov_tribedy_venugopalan_2019, title={Multiparticle correlations and collectivity in small systems from the initial state}, volume={982}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85060088336&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2018.09.051}, abstractNote={We report on recent progress in understanding multiparticle correlations in small systems from the initial state. First, we consider a proof-of-principle parton model, which we use to demonstrate that many of the multiparticle correlations observed in light-heavy ion collisions, often ascribed to hydrodynamic collectivity, can be qualitatively reproduced in an initial state model. Then, we study the two-particle harmonics v2 and v3 for p/d/3He+Au collisions at RHIC using the dilute-dense Color Glass Condensate Effective Field Theory framework. We show that this provides a viable alternative explanation to hydrodynamics, and elaborate on how such modeling can be improved.}, journal={Nuclear Physics A}, author={Dusling, K. and Mace, M. and Skokov, V.V. and Tribedy, P. and Venugopalan, R.}, year={2019}, pages={495–498} }
@article{skokov_vernikov_2019, title={On modular and cancellable elements of the lattice of semigroup varieties}, volume={16}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85064606202&partnerID=MN8TOARS}, DOI={10.33048/semi.2019.16.010}, abstractNote={We completely determine all semigroup varieties satysfiyng a permutational identity of length 3 that are modular elements of the lattice of all semigroup varieties. Using this result, we provide an example of a semigroup variety that is a modular but not cancellable element of this lattice.}, journal={Siberian Electronic Mathematical Reports}, author={Skokov, D.V. and Vernikov, B.M.}, year={2019}, pages={175–186} }
@article{mace_skokov_tribedy_venugopalan_2019, title={Systematics of azimuthal anisotropy harmonics in proton-nucleus collisions at the LHC from the Color Glass Condensate (vol 788, pg 161, 2019)}, volume={799}, ISSN={["1873-2445"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85074526917&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2019.135006}, journal={PHYSICS LETTERS B}, author={Mace, Mark and Skokov, Vladimir V. and Tribedy, Prithwish and Venugopalan, Raju}, year={2019}, month={Dec} }
@article{mace_skokov_tribedy_venugopalan_2019, title={Systematics of azimuthal anisotropy harmonics in proton–nucleus collisions at the LHC from the Color Glass Condensate}, volume={788}, url={https://doi.org/10.1016/j.physletb.2018.09.064}, DOI={10.1016/j.physletb.2018.09.064}, abstractNote={Simple power counting arguments in the dilute-dense framework of the Color Glass Condensate (CGC) Effective Field Theory predict that even and odd azimuthal anisotropy harmonics of two-particle correlations in proton–nucleus collisions at the LHC will respectively satisfy v2n2{2}∝Nch0 and v2n+12{2}∝Nch, where Nch denotes the number of charged particles. We show that these expectations are borne out qualitatively, and even quantitatively, within systematic uncertainties, for v2 and v4 in comparisons with data from the ATLAS collaboration. We also observe that ATLAS data for the v3 azimuthal harmonic are in excellent agreement with our qualitative expectation; quantitative comparisons are numerically challenging at present. The lessons from this study fully complement those gained by the recent comparison of the CGC dilute-dense framework [1] to data from the PHENIX collaboration on small system collisions at RHIC.}, note={[Erratum: Phys.Lett.B 799, 135006 (2019)]}, journal={Physics Letters B}, publisher={Elsevier BV}, author={Mace, Mark and Skokov, Vladimir V. and Tribedy, Prithwish and Venugopalan, Raju}, year={2019}, month={Jan}, pages={161–165} }
@article{armesto_dominguez_kovner_lublinsky_skokov_2019, title={The Color Glass Condensate density matrix: Lindblad evolution, entanglement entropy and Wigner functional}, volume={2019}, ISSN={["1029-8479"]}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85065472885&partnerID=MN8TOARS}, DOI={10.1007/JHEP05(2019)025}, abstractNote={We introduce the notion of the Color Glass Condensate (CGC) density matrix $\hat\rho$. This generalizes the concept of probability density for the distribution of the color charges in the hadronic wave function and is consistent with understanding the CGC as an effective theory after integration of part of the hadronic degrees of freedom. We derive the evolution equations for the density matrix and show that the JIMWLK evolution equation arises here as the evolution of diagonal matrix elements of $\hat\rho$ in the color charge density basis. We analyze the behavior of this density matrix under high energy evolution and show that its purity decreases with energy. We show that the evolution equation for the density matrix has the celebrated Kossakowsky-Lindblad form describing the non-unitary evolution of the density matrix of an open system. Additionally, we consider the dilute limit and demonstrate that, at large rapidity, the entanglement entropy of the density matrix grows linearly with rapidity according to $d S_e / d y = \gamma$, where $\gamma$ is the leading BFKL eigenvalue. We also discuss the evolution of $\hat\rho$ in the saturated regime and relate it to the Levin-Tuchin law and find that the entropy again grows linearly with rapidity, but at a slower rate. By analyzing the dense and dilute regimes of the full density matrix we are able to establish a duality between the regimes. Finally we introduce the Wigner functional derived from this density matrix and discuss how it can be used to determine the distribution of color currents, which may be instrumental in understanding dynamical features of QCD at high energy.}, number={5}, journal={JOURNAL OF HIGH ENERGY PHYSICS}, author={Armesto, Nestor and Dominguez, Fabio and Kovner, Alex and Lublinsky, Michael and Skokov, Vladimir V.}, year={2019}, month={May} }
@article{koverda_skokov_2019, title={The Entropy Maximum in Scale-Invariant Processes with 1/f ^{α} Power Spectrum: the Effect of White Noise Anisotropy}, volume={45}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85067419399&partnerID=MN8TOARS}, DOI={10.1134/S1063785019050080}, number={5}, journal={Technical Physics Letters}, author={Koverda, V.P. and Skokov, V.N.}, year={2019}, pages={439–442} }
@article{kovner_skokov_2018, title={Bose enhancement, the Liouville effective action, and the high multiplicity tail in p-A collisions}, volume={98}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85051027511&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.98.014004}, abstractNote={In the framework of dense-dilute CGC approach we study fluctuations in the multiplicity of produced particles in p-A collisions. We show that the leading effect that drives the fluctuations is the Bose enhancement of gluons in the proton wave function. We explicitly calculate the moment generating function that resums the effects of Bose enhancement. We show that it can be understood in terms of the Liouville effective action for the composite field which is identified with the fluctuating density, or saturation momentum of the proton. The resulting probability distribution turns out to be very close to the gamma-distribution. We also calculate the first correction to this distribution which is due to pairwise Hanbury Brown-Twiss correlations of produced gluons.}, number={1}, journal={Physical Review D}, author={Kovner, A. and Skokov, V.V.}, year={2018} }
@article{skokov_2018, title={Cancellable Elements of the Lattice of Epigroup Varieties}, volume={62}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85052846806&partnerID=MN8TOARS}, DOI={10.3103/S1066369X18090062}, abstractNote={We completely describe all commutative epigroup varieties that are cancellable elements of the lattice EPI of all epigroup varieties. In particular, we prove that a commutative epigroup variety is a cancellable element of the lattice EPI if and only if it is a modular element of this lattice.}, number={9}, journal={Russian Mathematics}, author={Skokov, D.V.}, year={2018}, pages={52–59} }
@article{gusev_skokov_vernikov_2018, title={Cancellable elements of the lattice of semigroup varieties}, volume={26}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85055702273&partnerID=MN8TOARS}, number={1}, journal={Algebra and Discrete Mathematics}, author={Gusev, S.V. and Skokov, D.V. and Vernikov, B.M.}, year={2018}, pages={34–46} }
@article{koverda_skokov_2018, title={Determination of preferential exponent α in random processes with a 1∕f^{α} power spectrum}, volume={511}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85051084092&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2018.07.046}, abstractNote={Abstract The stability of fluctuation processes with 1 ∕ f α power spectra in systems of stochastic equations simulating coupled phase transitions has been analyzed with the use of the maximum information entropy principle. It is shown that in the class of processes described by a nonpotential system of model equations fluctuations with a 1/f power spectrum, i.e. with the exponent α = 1 , are preferential, Preferential for the class of potential systems under consideration are fluctuations with a 1 ∕ f α spectrum at α = 1 . 3 . The spectral entropy of the random processes has been calculated. Calculation of the spectral entropy makes it possible to investigate the stability of random processes directly from the power spectra, without calculating the probability density functions. The dependence of the spectral entropies on the amplitude of white noise has a minimum whose position corresponds to the critical behavior.}, journal={Physica A: Statistical Mechanics and its Applications}, author={Koverda, V.P. and Skokov, V.N.}, year={2018}, pages={263–271} }
@article{kovner_skokov_2018, title={Does shape matter? v(2) vs eccentricity in small x gluon production}, volume={785}, DOI={10.1016/j.physlerb.2018.09.001}, journal={PHYSICS LETTERS B}, author={Kovner, Alex and Skokov, Vladimir}, year={2018}, pages={372–380} }
@article{kovner_skokov_2018, title={Does shape matter? v2 vs eccentricity in small x gluon production}, volume={785}, url={https://doi.org/10.1016/j.physletb.2018.09.001}, DOI={10.1016/j.physletb.2018.09.001}, abstractNote={We study analytically and numerically effects of spatial eccentricity of the projectile shape on the second flow harmonic in inclusive gluon production in p-A collisions in the CGC framework. Keeping the collision area fixed, we find that the two quantities are anti-correlated.}, journal={Physics Letters B}, publisher={Elsevier BV}, author={Kovner, Alex and Skokov, Vladimir V.}, year={2018}, month={Oct}, pages={372–380} }
@article{nishimura_pisarski_skokov_2018, title={Finite-temperature phase transitions of third and higher order in gauge theories at large N}, volume={97}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85043357340&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.97.036014}, abstractNote={We study phase transitions in $SU(\ensuremath{\infty})$ gauge theories at nonzero temperature using matrix models. Our basic assumption is that the effective potential is dominated by double trace terms for the Polyakov loops. As a function of the various parameters, related to terms linear, quadratic, and quartic in the Polyakov loop, the phase diagram exhibits a universal structure. In a large region of this parameter space, there is a continuous phase transition whose order is larger than second. This is a generalization of the phase transition of Gross, Witten, and Wadia. Depending upon the detailed form of the matrix model, the eigenvalue density and the behavior of the specific heat near the transition differ drastically. We speculate that in the pure gauge theory, although the deconfining transition is thermodynamically of first order, it can be nevertheless conformally symmetric at infinite $N$.}, number={3}, journal={Physical Review D}, author={Nishimura, H. and Pisarski, R.D. and Skokov, V.V.}, year={2018} }
@article{mace_skokov_tribedy_venugopalan_2018, title={Hierarchy of Azimuthal Anisotropy Harmonics in Collisions of Small Systems from the Color Glass Condensate}, volume={121}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85051536212&partnerID=MN8TOARS}, DOI={10.1103/PhysRevLett.121.052301}, abstractNote={We demonstrate that the striking systematics of two-particle azimuthal Fourier harmonics $v_2$ and $v_3$ in ultrarelativistic collisions of protons, deuterons and helium-3 ions off gold nuclei measured by the PHENIX Collaboration [arXiv:1805.02973] at the Relativistic Heavy Ion Collider (RHIC) is reproduced in the Color Glass Condensate (CGC) effective field theory. This contradicts the claim in [arXiv:1805.02973] that their data rules out initial state based explanations. The underlying systematics of the effect, as discussed previously in [arXiv:1705.00745,arXiv:1706.06260,arXiv:1801.09704], arise from the differing structure of strong color correlations between gluon domains of size $1/Q_S$ at fine ($p_\perp \gtrapprox Q_S$) or coarser ($p_\perp \lessapprox Q_S$) transverse momentum resolution. Further tests of the limits of validity of this framework can be carried out in light-heavy ion collisions at both RHIC and the Large Hadron Collider. Such measurements also offer novel opportunities for further exploration of the role of the surprisingly large short-range nuclear correlations measured at Jefferson Lab.}, number={5}, journal={Physical Review Letters}, author={Mace, M. and Skokov, V.V. and Tribedy, P. and Venugopalan, R.}, year={2018} }
@article{kovchegov_skokov_2018, title={How classical gluon fields generate odd azimuthal harmonics for the two-gluon correlation function in high-energy collisions}, volume={97}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85048208496&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.97.094021}, abstractNote={We show that, in the saturation/Color Glass Condensate framework, odd azimuthal harmonics of the two-gluon correlation function with a long-range separation in rapidity are generated by the higher-order saturation corrections in the interactions with the projectile and the target. At the very least, the odd harmonics require three scatterings in the projectile and three scatterings in the target. We derive the leading-order expression for the two-gluon production cross section which generates odd harmonics: the expression includes all-order interactions with the target and three interactions with the projectile. We evaluate the obtained expression both analytically and numerically, confirming that the odd-harmonics contribution to the two-gluon production in the saturation framework is non-zero.}, number={9}, journal={Physical Review D}, author={Kovchegov, Yuri V. and Skokov, Vladimir V.}, year={2018}, pages={094021} }
@article{koverda_skokov_2018, title={Oscillations and Waves in a Nonlinear System with the 1/f Spectrum}, volume={63}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85048266381&partnerID=MN8TOARS}, DOI={10.1134/S1063784218050134}, number={5}, journal={Technical Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2018}, pages={634–640} }
@article{koverda_skokov_2018, title={Oscillations and waves in a spatially distributed system with a 1/f spectrum}, volume={492}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85031808709&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2017.09.065}, abstractNote={A spatially distributed system with a 1/f power spectrum is described by two nonlinear stochastic equations. Conditions for the formation of auto-oscillations have been found using numerical methods. The formation of a 1/f and 1/k spectrum simultaneously with the formation and motion of waves under the action of white noise has been demonstrated. The large extreme fluctuations with 1/f and 1/k spectra correspond to the maximum entropy, which points to the stability of such processes. It is shown that on the background of formation and motion of waves at an external periodic action there appears spatio-temporal stochastic resonance, at which one can observe the expansion of the region of periodic pulsations under the action of white noise.}, journal={Physica A: Statistical Mechanics and its Applications}, author={Koverda, V.P. and Skokov, V.N.}, year={2018}, pages={1–9} }
@article{koverda_skokov_2018, title={Stability of Random Processes with the 1/f ^{α} Spectrum}, volume={63}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85057716880&partnerID=MN8TOARS}, DOI={10.1134/S1028335818110022}, number={11}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2018}, pages={451–454} }
@inproceedings{dumitru_skokov_2018, title={The Weizsäcker-Williams distribution of linearly polarized glu-ons (and its fluctuations) at small x}, volume={172}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85041685989&partnerID=MN8TOARS}, DOI={10.1051/epjconf/201817203009}, abstractNote={The conventional and linearly polarized Weizsäcker-Williams gluon distributions at small x are defined from the two-point function of the gluon field in light-cone gauge. They appear in the cross section for dijet production in deep inelastic scattering at high energy. We determine these functions in the small- x limit from solutions of the JIMWLK evolution equations and show that they exhibit approximate geometric scaling. Also, we discuss the functional distributions of these WW gluon distributions over the JIMWLK ensemble at rapidity Y ~ 1/ α s . These are determined by a 2d Liouville action for the logarithm of the covariant gauge function g 2 tr A + ( q ) A + ( -q ). For transverse momenta on the order of the saturation scale we observe large variations across configurations (evolution trajectories) of the linearly polarized distribution up to several times its average, and even to negative values.}, booktitle={EPJ Web of Conferences}, author={Dumitru, A. and Skokov, V.}, year={2018} }
@article{mclerran_skokov_2018, title={The large-N limit with vanishing leading order condensate for zero pion mass}, volume={49}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85052603410&partnerID=MN8TOARS}, DOI={10.5506/APhysPolB.49.1513}, abstractNote={It is conventionally assumed that the negative mass squared term in the linear sigma model version of the pion Lagrangian is $M^2 \sim \Lambda_{\rm QCD}^2$ in powers of $N_c$. We consider the case where $M^2 \sim \Lambda^2_{\rm QCD}/N_c$ so that to leading order in $N_c$ this symmetry breaking term vanishes. We present some arguments why this might be plausible. One might think that such a radical assumption would contradict lattice Monte Carlo data on QCD as function of $N_c$. We show that the linear sigma model gives a fair description of the data of DeGrand and Liu both for $N_c = 3$, and for variable $N_c$. The values of quark masses considered by DeGrand and Liu, and by Bali et. al. turn out to be too large to resolve the case we consider from that of the conventional large $N_c$ limit. We argue that for quark masses $m_{q} \ll \Lambda_{\rm QCD}/N_c^{3/2}$, both the baryon mass and nucleon size scale as $\sqrt{N_c}$. For $m_{q} \gg \Lambda_{\rm QCD}/N_c^{3/2}$ the conventional large-$N_c$ counting holds. The physical values of quark masses for QCD correspond to the small quark mass limit. We find pion-nucleon coupling strengths are reduced to order ${\cal O}(1)$ rather than ${\cal O}(N_c)$. Under the assumption that in the large $N_c$ limit the sigma meson mass is larger than that of the omega, and that the omega-nucleon coupling constant is larger than that of the sigma, we argue that the nucleon-nucleon large range potential is weakly attractive and admits an interaction energy of order $\Lambda_{\rm QCD}/N_c^{5/2} \sim 10$ MeV. With these assumptions on coupling and masses, there is no strong long range attractive channel for nucleon-nucleon interactions, so that nuclear matter at densities much smaller than that where nucleons strongly interact is a weakly interacting configuration of nucleons with strongly interacting localized cores.}, number={8}, journal={Acta Physica Polonica B}, author={McLerran, Larry and Skokov, Vladimir}, year={2018}, pages={1513–1530} }
@article{dumitru_kapilevich_skokov_2018, title={The small-x gluon distribution in centrality biased pA and pp collisions}, volume={974}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85045112098&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2018.03.012}, abstractNote={The nuclear modification factor RpA(pT) provides information on the small-x gluon distribution of a nucleus at hadron colliders. Several experiments have recently measured the nuclear modification factor not only in minimum bias but also for central pA collisions. In this paper we analyze the bias on the configurations of soft gluon fields introduced by a centrality selection via the number of hard particles. Such bias can be viewed as reweighting of configurations of small-x gluons. We find that the biased nuclear modification factor QpA(pT) for central collisions is above RpA(pT) for minimum bias events, and that it may redevelop a “Cronin peak” even at small x. The magnitude of the peak is predicted to increase approximately like 1/A⊥ν, ν∼0.6±0.1, if one is able to select more compact configurations of the projectile proton where its gluons occupy a smaller transverse area A⊥. We predict an enhanced Qpp(pT)−1∼1/(pT2)ν and a Cronin peak even for central pp collisions.}, journal={Nuclear Physics A}, author={Dumitru, A. and Kapilevich, G. and Skokov, V.}, year={2018}, pages={106–123} }
@inproceedings{nishimura_korthals-altes_pisarski_skokov_2018, title={Thermal effective potential for the polyakov loop to higher loop order}, volume={336}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85073681176&partnerID=MN8TOARS}, booktitle={Proceedings of Science}, author={Nishimura, H. and Korthals-Altes, C. and Pisarski, R.D. and Skokov, V.}, year={2018} }
@article{skokov_koverda_2017, title={An entropy-based stability analysis of extreme fluctuations in a system featuring a 1/f spectrum}, volume={62}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85037141516&partnerID=MN8TOARS}, DOI={10.1134/S1028335817110039}, number={11}, journal={Doklady Physics}, author={Skokov, V.N. and Koverda, V.P.}, year={2017}, pages={491–494} }
@inproceedings{kapralov_pavlov_borovov_dremin_krylov_ryzhakov_trubnikov_skokov_elagin_harfush_et al._2017, title={Co- and counter-pellet-injection in T-10 tokamak}, volume={907}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85034616065&partnerID=MN8TOARS}, DOI={10.1088/1742-6596/907/1/012003}, number={1}, booktitle={Journal of Physics: Conference Series}, author={Kapralov, V.G. and Pavlov, Yu.D. and Borovov, A.E. and Dremin, M.M. and Krylov, S.V. and Ryzhakov, D.V. and Trubnikov, A.S. and Skokov, V.G. and Elagin, V.V. and Harfush, H.A. and et al.}, year={2017} }
@article{bzdak_koch_skokov_2017, title={Correlated stopping, proton clusters and higher order proton cumulants}, volume={77}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85019036104&partnerID=MN8TOARS}, DOI={10.1140/epjc/s10052-017-4847-0}, abstractNote={We investigate possible effects of correlations between stopped nucleons on higher order proton cumulants at low energy heavy-ion collisions. We find that fluctuations of the number of wounded nucleons $$N_{\mathrm {part}}$$ lead to rather nontrivial dependence of the correlations on the centrality; however, this effect is too small to explain the large and positive four-proton correlations found in the preliminary data collected by the STAR collaboration at $$\sqrt{s}=7.7$$ GeV. We further demonstrate that, by taking into account additional proton clustering, we are able to qualitatively reproduce the preliminary experimental data. We speculate that this clustering may originate either from collective/multi-collision stopping which is expected to be effective at lower energies or from a possible first-order phase transition, or from (attractive) final state interactions. To test these ideas we propose to measure a mixed multi-particle correlation between stopped protons and a produced particle (e.g. pion, antiproton).}, number={5}, journal={European Physical Journal C}, author={Bzdak, A. and Koch, V. and Skokov, V.}, year={2017} }
@article{bzdak_koch_skokov_strodthoff_2017, title={Cumulants vs correlation functions and the QCD phase diagram at low energies}, volume={967}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85031932356&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2017.05.047}, abstractNote={We discuss the relation between particle number cumulants and genuine correlation functions. It is argued that measuring multi-particle correlation functions could provide cleaner information on possible non-trivial dynamics in heavy-ion collisions.}, journal={Nuclear Physics A}, author={Bzdak, A. and Koch, V. and Skokov, V. and Strodthoff, N.}, year={2017}, pages={465–467} }
@article{kovner_lublinsky_skokov_2017, title={Exploring correlations in the CGC wave function: Odd azimuthal anisotropy}, volume={96}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85027227363&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.96.016010}, abstractNote={We extend the CGC approach to calculation of the double inclusive gluon production by including high-density effect in the CGC wave function of the projectile (proton). Our main result is that these effects lead to the appearance of odd harmonics in the two-particle correlation C(k,p). We find that in the high momentum limit, |k|,|p|>>Q_s, this results in a positive c_1{2}. Additionally when the magnitudes of the two momenta are approximately equal, |k|/|p| ~ 1, the density effects also generate a positive third harmonic c_3{2}, which translates into a non-vanishing v_3 when the momenta of the trigger and associated particle are in the same momentum bin. The sign of c_3{2} becomes negative when |k|/|p|>1.1 suggesting an interesting experimental signature.}, number={1}, journal={Physical Review D}, author={Kovner, Alex and Lublinsky, Michael and Skokov, Vladimir}, year={2017}, pages={016010} }
@article{koch_bzdak_skokov_2017, title={Fluctuations and the QCD phase diagram}, volume={10}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85037522871&partnerID=MN8TOARS}, DOI={10.5506/APhysPolBSupp.10.639}, abstractNote={We briefly review howfluctuation measurements may help to reveal the properties of the QCD phase diagram. We further discuss various background effects, such as charge conservation, which contribute to fluctuation observables and which need to be well understood before definitive conclusions about a possible phase structure can be drawn.}, number={3}, journal={Acta Physica Polonica B, Proceedings Supplement}, author={Koch, V. and Bzdak, A. and Skokov, V.}, year={2017}, pages={639–644} }
@article{dumitru_skokov_2017, title={Fluctuations of the gluon distribution from the small-x effective action}, volume={96}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85031091097&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.96.056029}, abstractNote={The computation of observables in high energy QCD involves an average over stochastic semiclassical small-x gluon fields. The weight of various configurations is determined by the effective action. We introduce a method to study fluctuations of observables, functionals of the small-x fields, which does not explicitly involve dipoles. We integrate out those fluctuations of the gluon field under which a given observable is invariant. Thereby we obtain the effective potential for that observable describing its fluctuations about the saddle point. We determine explicitly the effective potential for the covariant gauge gluon distribution both for the McLerran-Venugopalan (MV) model and for a (non-local) Gaussian approximation for the small-x effective action. This provides insight into the correlation of fluctuations of the number of hard gluons versus their typical transverse momentum. We find that the spectral shape of the fluctuations of the gluon distribution is fundamentally different in the MV model, where there is a pile-up of gluons near the saturation scale, versus the solution of the small-x JIMWLK renormalization group, which generates essentially scale invariant fluctuations above the absorptive boundary set by the saturation scale.}, number={5}, journal={Physical Review D}, author={Dumitru, Adrian and Skokov, Vladimir}, year={2017}, pages={056029} }
@article{pisarski_skokov_2017, title={How tetraquarks can affect the chiral phase transition}, volume={967}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85031998294&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2017.06.015}, abstractNote={Abstract We discuss the possible role which scalar mesons composed of tetraquarks can play in the chiral phase transition for three colors and two or three light flavors. For two flavors the tetraquark is an isoscalar, and isn't expected to significantly affect the chiral transition. For three flavors, however, one can naturally form a tetraquark field which in the same representation as the usual chiral field. Having two fields can alter the chiral transition significantly: for light fields, they may produce two chiral phase transitions. For QCD, in the plane of temperature and chemical potential we argue that a crossover line for the tetraquark condensate naturally connects to a line of phase transitions for color superconductivity.}, journal={Nuclear Physics A}, author={Pisarski, R.D. and Skokov, V.V.}, year={2017}, pages={844–847} }
@article{kovner_lublinsky_skokov_2017, title={Initial state qqg correlations as a background for the chiral magnetic effect in collision of small systems}, volume={96}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85037709064&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.96.096003}, abstractNote={Motivated by understanding the background to Chiral Magnetic Effect in proton-nucleus collisions from first principles, we compute the three particle correlation in the projectile wave function. We extract the correlations between two quarks and one gluon in the framework of the Color Glass Condensate. This is related to the same-charge correlation of the conventional observable for the Chiral Magnetic Effect. We show that there are two different contributions to this correlation function. One contribution is rapidity-independent and as such can be identified with the pedestal; while the other displays rather strong rapidity dependence. The pedestal contribution and the rapidity-dependent contribution at large rapidity separation between the two quarks result in the negative same charge correlations, while at small rapidity separation the second contribution changes sign. We argue that the computed initial state correlations might be partially responsible for the experimentally observed signal in proton-nucleus collisions.}, number={9}, journal={Physical Review D}, author={Kovner, Alex and Lublinsky, Michael and Skokov, Vladimir}, year={2017}, pages={096003} }
@article{mclerran_skokov_2017, title={Odd azimuthal anisotropy of the Glasma for pA scattering}, volume={959}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85009101147&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2016.12.011}, abstractNote={In this paper we analytically extract the odd azimuthal anisotropy in the Classical Yang–Mills equations for the Glasma for pA collisions. We compute the first non-trivial term in the expansion of the proton sources of color charge. The computation is valid in the limit of a large nucleus when the produced particle momenta are larger than the saturation momentum of the proton.}, journal={Nuclear Physics A}, author={McLerran, Larry and Skokov, Vladimir}, year={2017}, pages={83–101} }
@article{fukushima_skokov_2017, title={Polyakov loop modeling for hot QCD}, volume={96}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85020851707&partnerID=MN8TOARS}, DOI={10.1016/j.ppnp.2017.05.002}, abstractNote={We review theoretical aspects of quantum chromodynamics (QCD) at finite temperature. The most important physical variable to characterize hot QCD is the Polyakov loop, which is an approximate order parameter for quark deconfinement in a hot gluonic medium. Additionally to its role as an order parameter, the Polyakov loop has rich physical contents in both perturbative and non-perturbative sectors. This review covers a wide range of subjects associated with the Polyakov loop from topological defects in hot QCD to model building with coupling to the Polyakov loop.}, journal={Progress in Particle and Nuclear Physics}, author={Fukushima, K. and Skokov, V.}, year={2017}, pages={154–199} }
@inproceedings{nishimura_pisarski_skokov_2017, title={Possible higher order phase transition in large-N gauge theory at finite temperature}, volume={2017-August}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85050487459&partnerID=MN8TOARS}, booktitle={Proceedings of Science}, author={Nishimura, H. and Pisarski, R.D. and Skokov, V.V.}, year={2017} }
@article{koch_schlichting_skokov_sorensen_thomas_voloshin_wang_yee_2017, title={Status of the chiral magnetic effect and collisions of isobars}, volume={41}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85021749916&partnerID=MN8TOARS}, DOI={10.1088/1674-1137/41/7/072001}, abstractNote={In this report, we briefly examine the current status of the study of the chiral magnetic effect including theory and experimental progress. We recommend future strategies for resolving uncertainties in interpretation including recommendations for theoretical work, recommendations for measurements based on data collected in the past five years, and recommendations for beam use in the coming years of RHIC. We have specifically investigated the case for colliding nuclear isobars (nuclei with the same mass but different charge) and find the case compelling. We recommend that a program of nuclear isobar collisions to isolate the chiral magnetic effect from background sources be placed as a high priority item in the strategy for completing the RHIC mission.}, number={7}, journal={Chinese Physics C}, author={Koch, Volker and Schlichting, Soeren and Skokov, Vladimir and Sorensen, Paul and Thomas, Jim and Voloshin, Sergei and Wang, Gang and Yee, Ho-Ung}, year={2017}, pages={072001} }
@inproceedings{kapralov_dremin_harfush_krylov_skokov_borovov_elagin_sedov_sharov_2017, title={Study of thermal quench of discharge using a massive gas injection into the plasma of T-10 tokamak}, volume={907}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85034612883&partnerID=MN8TOARS}, DOI={10.1088/1742-6596/907/1/012010}, abstractNote={The report presents the results of simulations of plasma disruption in the T-10 tokamak using the ASTRA code, including discharges with a disruption being initiated by the massive gas injection (MGI). This study focuses on the development phase of thermal quench, and the effect of different channels of heat loss during quench evolution is examined. It is shown that the initial phase of the slow phase of thermal quench can be described by the selection of sources and transport coefficients.}, number={1}, booktitle={Journal of Physics: Conference Series}, author={Kapralov, V.G. and Dremin, M.M. and Harfush, H.A. and Krylov, S.V. and Skokov, V.G. and Borovov, A.E. and Elagin, V.V. and Sedov, K.S. and Sharov, I.A.}, year={2017} }
@article{mclerran_skokov_2017, title={The MV model of the color glass condensate for a finite number of sources including Coulomb interactions}, volume={957}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84988646744&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2016.09.004}, abstractNote={We modify the McLerran-Venugopalan model to include only a finite number of sources of color charge. We argue that Coulombic interactions between these color charges generates a source-source correlation function that properly includes the effects of color charge screening, a generalization of Debye screening for the Color Glass Condensate. Such a model may be useful for computing angular harmonics of flow measured in high energy hadron collisions for small systems. In this paper we provide a basic formulation of the problem on a lattice.}, journal={Nuclear Physics A}, author={McLerran, Larry and Skokov, Vladimir V.}, year={2017}, pages={230–239} }
@article{almasi_pisarski_skokov_2017, title={Volume dependence of baryon number cumulants and their ratios}, volume={95}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85019921875&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.95.056015}, abstractNote={We explore the influence of finite volume effects on baryon number fluctuations in a non-perturbative chiral model. In order to account for soft modes, we use the functional renormalization group in a finite volume, using a smooth regulator function in momentum space. We compare the results for a smooth regulator with those for a sharp (or Litim) regulator, and show that in a finite volume, the latter produces spurious artifacts. In a finite volume there are only apparent critical points, about which we compute the ratio of the fourth to the second order cumulant of quark number fluctuations. When the volume is sufficiently small the system has two apparent critical points; as the system size decreases, the location of the apparent critical point can move to higher temperature and lower chemical potential.}, number={5}, journal={Physical Review D}, author={Almasi, Gabor and Pisarski, Robert and Skokov, Vladimir}, year={2017}, pages={056015} }
@article{bzdak_skokov_bathe_2016, title={Centrality dependence of high energy jets in p+Pb collisions at energies available at the CERN Large Hadron Collider}, volume={93}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84963647583&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.93.044901}, abstractNote={The recently measured centrality dependence of high energy jets in proton-lead collisions at the CERN Large Hadron Collider (LHC) is investigated. We hypothesize that events with jets of very high energy (a few hundred GeV) are characterized by a suppressed number of soft particles, thus shifting these events into more peripheral bins. This naturally results in the suppression (enhancement) of the nuclear modification factor, ${R}_{pA}$, in central (peripheral) collisions. Our calculations suggest that a moderate suppression of the order of $20%$, for ${10}^{3}$ GeV jets, can quantitatively reproduce the experimental data. We further extract the suppression factor as a function of jet energy and test our conjecture using available ${R}_{pA}$ data for various centralities.}, number={4}, journal={Physical Review C}, author={Bzdak, Adam and Skokov, Vladimir and Bathe, Stefan}, year={2016}, pages={044901} }
@article{pisarski_skokov_2016, title={Chiral matrix model for the phase transition in QCD}, volume={956}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84992146521&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2016.02.005}, abstractNote={Abstract We discuss how to model chiral symmetry restoration with an effective theory of deconfinement. The model includes fluctuations in the quarks to one loop order, while the mesons of the sigma model are treated in mean field approximation. We note that a new counterterm is required at T = 0 , and a novel form of symmetry breaking at T ≠ 0 . We discuss how to incorporate tetraquark states, representing J P = 0 + scalar mesons, into a linear sigma model. We suggest that their effect upon the chiral phase transition is small.}, journal={Nuclear Physics A}, author={Pisarski, R.D. and Skokov, V.}, year={2016}, pages={673–676} }
@article{pisarski_skokov_2016, title={Chiral matrix model of the semi-QGP in QCD}, volume={94}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84982824759&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.94.034015}, abstractNote={A chiral matrix model applicable to QCD with 2+1 flavors is developed. This requires adding a SU(3)_L x SU(3)_R x Z(3)_A nonet of scalar fields, with both parities, and coupling these to quarks through a Yukawa coupling, y. Treating the scalar fields in mean field approximation, the effective Lagrangian is computed by integrating out quarks to one loop order. In addition to the usual symmetry breaking term, linear in the current quark mass m_qk, at a nonzero temperature T it is necessary to add a new term, ~ m_qk T^2. The parameters of the gluon part of the matrix model are identical to that for the pure glue theory without quarks. The parameters in the chiral matrix model are fixed by the values, at zero temperature, of the pion decay constant and the masses of the pions, kaons, eta, and eta'. The temperature for the chiral crossover at T_chi = 155 MeV is determined by adjusting the Yukawa coupling y. We find reasonable agreement with the results of numerical simulations on the lattice for the pressure and related quantities. In the chiral limit, besides the divergence in the chiral susceptibility there is also a milder divergence in the susceptibility between the Polyakov loop and the chiral order parameter, with critical exponent beta - 1. We compute derivatives with respect to a quark chemical potential to determine the susceptibilities for baryon number, the chi_2n. Especially sensitive tests are provided by chi_4 - chi_2 and by chi_6, which changes in sign about T_chi. The behavior of the susceptibilities in the chiral matrix model strongly suggests that as the temperature increases from T_chi, that the transition to deconfinement is significantly quicker than indicated by the measurements of the (renormalized) Polyakov loop on the lattice.}, number={3}, journal={Physical Review D}, author={Pisarski, Robert D. and Skokov, Vladimir V.}, year={2016}, pages={034015} }
@article{dumitru_skokov_2016, title={Cos (4φ) azimuthal anisotropy in small- x DIS dijet production beyond the leading power TMD limit}, volume={94}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84979658568&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.94.014030}, abstractNote={We determine the first correction to the quadrupole operator in high-energy QCD beyond the transverse momentum dependent (TMD) limit of Weizs\"acker-Williams and linearly polarized gluon distributions. These functions give rise to isotropic, respectively, $\ensuremath{\sim}\mathrm{cos}2\ensuremath{\phi}$ angular distributions in deep inelastic scattering (DIS) dijet production. On the other hand, the correction produces a $\ensuremath{\sim}\mathrm{cos}4\ensuremath{\phi}$ angular dependence which is suppressed by one additional power of the dijet transverse momentum scale (squared) ${P}^{2}$.}, number={1}, journal={Physical Review D}, author={Dumitru, Adrian and Skokov, Vladimir}, year={2016}, pages={014030} }
@article{shaprynski?_skokov_vernikov_2016, title={Erratum to: “Special elements of the lattice of epigroup varieties” (Algebra Univers, 10.1007/s00012-016-0380-5)}, volume={76}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84975166683&partnerID=MN8TOARS}, DOI={10.1007/s00012-016-0383-2}, number={1}, journal={Algebra Universalis}, author={Shaprynski?, V.Y. and Skokov, D.V. and Vernikov, B.M.}, year={2016}, pages={31} }
@article{mclerran_skokov_2016, title={Finite numbers of sources, particle correlations and the Color Glass Condensate}, volume={947}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84953310375&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2015.12.005}, abstractNote={We show that for a finite number of emitting sources, the Color Glass Condensate produces substantial elliptic azimuthal anisotropy, characterized by $v_2$, for two and four particle correlations for momentum greater than or of the order the saturation momentum. The flow produced has the correct semi-quantitative features to describe flow seen in LHC experiments with p-Pb and pp collisions. This flow is induced by quantum mechanical interference between the waves of produced particles, and the flow itself is coupled to fluctuations in the positions of emitting sources. We shortly discuss generalizing these results to odd $v_n$, to correlations involving larger number of particles, and to transverse momentum scales $\Lambda_{\rm QCD} \ll p_T \ll Q_{\rm sat}$.}, journal={Nuclear Physics A}, author={McLerran, Larry and Skokov, Vladimir}, year={2016}, pages={142–154} }
@article{koverda_skokov_2016, title={Fluctuations and waves in a spatially distributed system with the 1/f spectrum}, volume={61}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-85002136618&partnerID=MN8TOARS}, DOI={10.1134/S1028335816110094}, number={11}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2016}, pages={535–538} }
@article{pisarski_skokov_2016, title={How tetraquarks can generate a second chiral phase transition}, volume={94}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84990913983&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.94.054008}, abstractNote={We consider how tetraquarks can affect the chiral phase transition in theories like QCD, with light quarks coupled to three colors. For two flavors the tetraquark field is an isosinglet, and its effect is minimal. For three flavors, however, the tetraquark field transforms in the same representation of the chiral symmetry group as the usual chiral order parameter, and so for very light quarks there may be two chiral phase transitions, which are both of first order. In QCD, results from the lattice indicate that any transition from the tetraquark condensate is a smooth crossover. In the plane of temperature and quark chemical potential, though, a crossover line for the tetraquark condensate is naturally related to the transition line for color superconductivity. For four flavors we suggest that a triquark field, antisymmetric in both flavor and color, combine to form hexaquarks.}, number={5}, journal={Physical Review D}, author={Pisarski, Robert D. and Skokov, Vladimir V.}, year={2016}, pages={054008} }
@article{koverda_skokov_2016, title={Noise-induced synchronization in a system with a 1/f power spectrum}, volume={452}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84959249896&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2016.02.016}, abstractNote={A spatially distributed system with 1/f fluctuations at coupled nonequilibrium phase transitions have been simulated by two nonlinear stochastic equations. It is shown numerically that at sufficiently high intensity of white noise in the system there arises noise-induced synchronization, which is a nonequilibrium phase transition. To the critical point of the nonequilibrium phase transition corresponds the 1/f power spectrum and the maximum of informational entropy.}, journal={Physica A: Statistical Mechanics and its Applications}, author={Koverda, V.P. and Skokov, V.N.}, year={2016}, pages={126–132} }
@article{shaprynski?_skokov_vernikov_2016, title={Special elements of the lattice of epigroup varieties}, volume={76}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84961118916&partnerID=MN8TOARS}, DOI={10.1007/s00012-016-0380-5}, abstractNote={We study special elements of eight types (namely, neutral, standard, costandard, distributive, codistributive, modular, lower-modular and upper-modular elements) in the lattice EPI of all epigroup varieties. Neutral, standard, costandard, distributive and lower-modular elements are completely determined. A strong necessary condition and a sufficient condition for modular elements are found. Modular elements are completely classified within the class of commutative varieties, while codistributive and upper-modular elements are completely determined within the wider class of strongly permutative varieties. It is verified that an element of EPI is costandard if and only if it is neutral; is standard if and only if it is distributive; is modular whenever it is lower-modular; is neutral if and only if it is lower-modular and upper-modular simultaneously. We found also an application of results concerning neutral and lower-modular elements of EPI for studying of definable sets of epigroup varieties.}, number={1}, journal={Algebra Universalis}, author={Shaprynski?, V.Y. and Skokov, D.V. and Vernikov, B.M.}, year={2016} }
@article{skokov_vinogradov_reshetnikov_koverda_2016, title={Stochastic resonance in the crisis boiling regime under periodic heat release}, volume={54}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84977151358&partnerID=MN8TOARS}, DOI={10.1134/S0018151X16030196}, number={3}, journal={High Temperature}, author={Skokov, V.N. and Vinogradov, A.V. and Reshetnikov, A.V. and Koverda, V.P.}, year={2016}, pages={344–348} }
@article{koverda_skokov_2016, title={Stochastic synchronization in a spatially distributed system with 1/f power spectrum}, volume={61}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84981557087&partnerID=MN8TOARS}, DOI={10.1134/S1063784216080168}, number={8}, journal={Technical Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2016}, pages={1135–1140} }
@article{dumitru_giannini_skokov_2015, title={Anisotropic particle production and azimuthal correlations in high-energy pA collisions}, volume={3}, url={http://inspirehep.net/record/1352132}, author={Dumitru, Adrian and Giannini, Andre V. and Skokov, Vladimir}, year={2015}, month={Mar} }
@article{dumitru_skokov_2015, title={Anisotropy of the semiclassical gluon field of a large nucleus at high energy}, volume={91}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84929093457&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.91.074006}, abstractNote={The McLerran-Venugopalan model describes a highly boosted hadron/nucleus as a sheet of random color charges which source soft classical Weizs\"acker-Williams gluon fields. We show that due to fluctuations, individual configurations are azimuthally anisotropic. We present initial evidence that impact parameter dependent small-x JIMWLK resummation preserves such anisotropies over several units of rapidity. Finally, we compute the first four azimuthal Fourier amplitudes of the S-matrix of a fundamental dipole in such background fields.}, number={7}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Dumitru, Adrian and Skokov, Vladimir}, year={2015}, pages={074006} }
@article{dumitru_mclerran_skokov_2015, title={Azimuthal asymmetries and the emergence of "collectivity" from multi-particle correlations in high-energy pA collisions}, volume={743}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84923355663&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2015.02.046}, abstractNote={We show how angular asymmetries $\sim\cos 2\phi$ can arise in dipole scattering at high energies. We illustrate the effects due to anisotropic fluctuations of the saturation momentum of the target with a finite correlation length in the transverse impact parameter plane, i.e.\ from a domain-like structure. We compute the two-particle azimuthal cumulant in this model including both one-particle factorizable as well as genuine two-particle non-factorizable contributions to the two-particle cross section. We also compute the full BBGKY hierarchy for the four-particle azimuthal cumulant and find that only the fully factorizable contribution to $c_2\{4\}$ is negative while all contributions from genuine two, three and four-particle correlations are positive. Our results may provide some qualitative insight into the origin of azimuthal asymmetries in p+Pb collisions at the LHC which reveal a change of sign of $c_2\{4\}$ in high-multiplicity events.}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Dumitru, Adrian and McLerran, Larry and Skokov, Vladimir}, year={2015}, pages={134–137} }
@article{sergeev_kuteev_bykov_gervash_glazunov_goncharov_dnestrovskij_khayrutdinov_klishchenko_lukash_et al._2015, title={Conceptual design of divertor and first wall for DEMO-FNS}, volume={55}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84948440847&partnerID=MN8TOARS}, DOI={10.1088/0029-5515/55/12/123013}, abstractNote={Key issues of design of the divertor and the first wall of DEMO-FNS are presented. A double null closed magnetic configuration was chosen with long external legs and V-shaped corners. The divertor employs a cassette design similar to that of ITER. Water-cooled first wall of the tokamak is made of Be tiles and CuCrZr-stainless steel shells. Lithium injection and circulation technologies are foreseen for protection of plasma facing components. Simulations of thermal loads onto the first wall and divertor plates suggest a possibility to distribute heat loads making them less than 10 MW m−2. Evaluations of sputtering and evaporation of plasma-facing materials suggest that lithium may protect the first wall. To prevent Be erosion at the outer divertor plates either the full detached divertor operation or arrangement of the renewal lithium flow on targets should be implemented. Test bed experiments on the Tsefey-M facility with the first wall mockup coated by Ве tiles and cooled by water are presented. The temperature of the surface of tiles reached 280–300 °С at 5 MW m−2 and 600–650 °С at 10.5 MW m−2. The mockup successfully withstood 1000 cycles with the lower thermal loading and 100 cycles with higher thermal loading.}, number={12}, journal={Nuclear Fusion}, author={Sergeev, V.Y. and Kuteev, B.V. and Bykov, A.S. and Gervash, A.A. and Glazunov, D.A. and Goncharov, P.R. and Dnestrovskij, A.Y. and Khayrutdinov, R.R. and Klishchenko, A.V. and Lukash, V.E. and et al.}, year={2015} }
@article{pisarski_skokov_2015, title={Correlation functions of Polyakov loops at tree level}, volume={1}, url={http://inspirehep.net/record/1341311}, author={Pisarski, Robert D. and Skokov, Vladimir V.}, year={2015}, month={Jan} }
@article{dumitru_lappi_skokov_2015, title={Distribution of Linearly Polarized Gluons and Elliptic Azimuthal Anisotropy in Deep Inelastic Scattering Dijet Production at High Energy}, volume={115}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84953213460&partnerID=MN8TOARS}, DOI={10.1103/PhysRevLett.115.252301}, abstractNote={We determine the distribution of linearly polarized gluons of a dense target at small $x$ by solving the B-JIMWLK rapidity evolution equations. From these solutions we estimate the amplitude of $\sim \cos 2\phi$ azimuthal asymmetries in DIS dijet production at high energies. We find sizeable long-range in rapidity azimuthal asymmetries with a magnitude in the range of $v_2=\langle\cos 2\phi\rangle \sim 10\%$.}, number={25}, journal={Physical Review Letters}, author={Dumitru, Adrian and Lappi, Tuomas and Skokov, Vladimir}, year={2015}, pages={252301} }
@article{skokov_2015, title={Distributive elements of the lattice of epigroup varieties}, volume={12}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84949543588&partnerID=MN8TOARS}, DOI={10.17377/semi.2015.12.058}, journal={Siberian Electronic Mathematical Reports}, author={Skokov, D.V.}, year={2015}, pages={723–731} }
@article{skokov_2015, title={High order cumulants of the azimuthal anisotropy in the dilute-dense limit: Connected graphs}, volume={91}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84924348117&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.91.054014}, abstractNote={We analytically compute higher order cumulants of the azimuthal anisotropy, ${c}_{2}{2m}$, and corresponding ${v}_{2}{2m}$ at high transverse momentum in the dilute-dense limit. The dense target is considered in the framework of the McLerran-Venugopolan model. The absolute values of the harmonics ${v}_{2}{2m}$ of the azimuthal anisotropy are approximately equal, $|{v}_{2}{2m}|\ensuremath{\approx}|{v}_{2}{2{m}^{\ensuremath{'}}}|$, for large $m$ and ${m}^{\ensuremath{'}}$. However, the harmonics with order $2m=4n$ are complex. We argue that this is a generic property of connected graphs, which remains true in the dense-dense limit.}, number={5}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Skokov, Vladimir}, year={2015}, pages={054014} }
@article{reshetnikov_mazheiko_skokov_koverda_2015, title={Hydrodynamic response to explosive boiling-up in a jet of superheated water}, volume={85}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84924147107&partnerID=MN8TOARS}, DOI={10.1016/j.ijheatmasstransfer.2015.02.045}, abstractNote={The behavior of the jet recoil of boiling water discharging through a short cylindrical nozzle into the atmosphere and jet shape under high and limit superheating was experimentally studied. There was a complete breakup of the jet under both the realization of intensive heterogeneous nucleation (explosive boiling-up) in the flow and the presence of an adjacent plane behind the nozzle outlet. The complete jet breakup was accompanied by a sharp decrease of the jet recoil (the crisis of the recoil force). An explanation of the observed phenomena was given with the involvement of the Coanda effect. In both the transient regimes of boiling-up and the transition to the complete jet breakup 1/f fluctuations were observed. They pointed to the instability and possibility of large-scale outburst in the flow.}, journal={International Journal of Heat and Mass Transfer}, author={Reshetnikov, A.V. and Mazheiko, N.A. and Skokov, V.N. and Koverda, V.P.}, year={2015}, pages={965–970} }
@article{bzdak_skokov_2015, title={Multi-particle eccentricities in collisions dominated by fluctuations}, volume={943}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84939818373&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2015.08.001}, abstractNote={We compute analytically the multi-particle eccentricities, \epsilon_m {2n}, for systems dominated by fluctuations, such as proton-nucleus collisions at the Large Hadron Collider. In particular, we derive a general relation for <\epsilon_2^{2n}>. We further discuss the relations between various multi-particle eccentricities and demonstrate that \epsilon_2{2} > \epsilon_2{4} \simeq \epsilon_2{6} \simeq \epsilon_2{8}, in agreement with recent numerical calculations in a Glauber model.}, journal={Nuclear Physics A}, author={Bzdak, Adam and Skokov, Vladimir}, year={2015}, pages={1–8} }
@article{koverda_skokov_2015, title={Noise-induced synchronization in a spatially distributed system with a 1/f spectrum}, volume={60}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84930666012&partnerID=MN8TOARS}, DOI={10.1134/S1028335815050092}, number={5}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2015}, pages={193–196} }
@article{berényi_varró_skokov_lévai_2015, title={Pair production at the edge of the QED flux tube}, volume={749}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84938931024&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2015.07.074}, abstractNote={Abstract We investigate the process of Abelian pair production in the presence of strong inhomogeneous and time-dependent external electric fields. The spatial dependence of the external field is motivated by a non-Abelian color flux tube in heavy-ion collisions. We show that the inhomogeneity significantly increases the particle yield compared to that in the commonly used models with a constant and homogeneous field. Moreover our results indicate that in contrast to the latter, most of the particles are produced at the interface of the field profile in accordance with Heisenberg's prediction.}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Berényi, Dániel and Varró, Sándor and Skokov, Vladimir V. and Lévai, Péter}, year={2015}, pages={210–214} }
@inproceedings{berényi_varró_lévai_skokov_2015, title={Pair production from space- and time-dependent strong fields}, volume={594}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84925337087&partnerID=MN8TOARS}, DOI={10.1088/1742-6596/594/1/012055}, abstractNote={The recent development of laser technology and the large number of extreme laser experiments under construction renewed the research related to pair production in strong fields. If the predicted threshold of nonlinear QED is reached, pair production may be observed and the measurements must be compared with appropriate theoretical predictions. However the theoretical side still lacks the understanding of the relevant quantum processes including the effect of laser field parameters on the number and spectrum of created particles. We use the Dirac-Heisenberg-Wigner formalism to investigate the role of the pure electric inhomogeneity on the spectra of created pairs. This simplified model may also be relevant in high energy physics for the description of string fragmentation in the early stages of heavy ion collisions.}, number={1}, booktitle={Journal of Physics: Conference Series}, author={Berényi, D. and Varró, S. and Lévai, P. and Skokov, Vladimir V.}, year={2015}, pages={012055} }
@article{gale_hidaka_jeon_lin_paquet_pisarski_satow_skokov_vujanovic_2015, title={Production and elliptic flow of dileptons and photons in a matrix model of the quark-gluon plasma}, volume={114}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84923298472&partnerID=MN8TOARS}, DOI={10.1103/PhysRevLett.114.072301}, abstractNote={We consider a nonperturbative approach to the thermal production of dileptons and photons at temperatures near the critical temperature in QCD. The suppression of colored excitations at low temperature is modeled by including a small value of the Polyakov loop, in a ``semi''-quark-gluon plasma (QGP). Comparing the semi-QGP to the perturbative QGP, we find a mild enhancement of thermal dileptons. In contrast, to leading logarithmic order in weak coupling there are far fewer hard photons from the semi-QGP than the usual QGP. To illustrate the possible effects on photon and dilepton production in heavy-ion collisions, we integrate the rate with a simulation using ideal hydrodynamics. Dileptons uniformly exhibit a small flow, but the strong suppression of photons in the semi-QGP tends to weight the elliptical flow of photons to that generated in the hadronic phase.}, number={7}, journal={Physical Review Letters}, author={Gale, Charles and Hidaka, Yoshimasa and Jeon, Sangyong and Lin, Shu and Paquet, Jean-François and Pisarski, Robert D. and Satow, Daisuke and Skokov, Vladimir V. and Vujanovic, Gojko}, year={2015}, pages={072301} }
@article{skokov_koverda_vinogradov_reshetnikov_2015, title={Stochastic resonance at nonequilibrium phase transitions}, volume={430}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84925014050&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2015.02.084}, abstractNote={Abstract Thermal pulsations in a transition from a nucleate to a film regime of water boiling on a wire heater with a periodic Joule heat release have been studied experimentally. At frequencies of the periodic action smaller than 0.1 Hz the intermittency of the nucleate and film boiling regimes was observed. In this case the amplitude of thermal pulsations increased. The experiments with an additional noise source were carried out. With an increase in the intensity of the noise the power of the output periodic mode increased and reaching the maximum began to decrease. The results are interpreted as stochastic resonance when the periodic component of pulsations increases in the presence of noise. The results show that in a complex system with nonequilibrium phase transitions there can occur both the extreme fluctuations with 1 / f power spectrum and stochastic resonance under external periodic action.}, journal={Physica A: Statistical Mechanics and its Applications}, author={Skokov, V.N. and Koverda, V.P. and Vinogradov, A.V. and Reshetnikov, A.V.}, year={2015}, pages={65–72} }
@article{mclerran_skokov_2015, title={The eccentric collective bfkl pomeron}, volume={46}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84940886719&partnerID=MN8TOARS}, DOI={10.5506/APhysPolB.46.1513}, abstractNote={We apply the flow analysis for multi-particle correlations used in heavy ion collisions to multi-particle production from a Pomeron. We show that the n'th order angular harmonic arising from an m particle correlation v_n[m] satisfies v_n[m] ~ v_n[p] for n $\ge$ 1. We discuss some implications of this for the Color Glass Condensate description of high energy hadronic collisions.}, number={8}, journal={Acta Physica Polonica B}, author={McLerran, Larry and Skokov, Vladimir V.}, year={2015}, pages={1513–1525} }
@article{lin_pisarski_skokov_2014, title={Collisional energy loss above the critical temperature in QCD}, volume={730}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84893613460&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2014.01.043}, abstractNote={We compute the collisional energy loss for a heavy quark above the critical temperature in Quantum ChromoDynamics (QCD). We work in the semi Quark-Gluon Plasma, which assumes that this region is dominated by the non-trivial holonomy of the thermal Wilson line. Relative to the result to leading order in perturbation theory, at a fixed value of the coupling constant we generically we find that collisional energy loss is suppressed by powers of the Polyakov loop, l < 1. For small values of the loop, this suppression is linear for the scattering off of light quarks, and quadratic for the scattering off of gluons, or for Compton scattering.}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Lin, Shu and Pisarski, Robert D. and Skokov, Vladimir V.}, year={2014}, pages={236–242} }
@article{mclerran_skokov_2014, title={Comments about the electromagnetic field in heavy-ion collisions}, volume={929}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84918804088&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2014.05.008}, abstractNote={In this short article we discuss the properties of electromagnetic fields in heavy-ion collisions and consequences for observables. We address quantitatively the issue of the magnetic field lifetime in a collision including the electric and chiral magnetic conductivities. We show that for reasonable parameters, the magnetic field created by spectators in a collision is not modified by the presence of matter. Based on this, we draw definite conclusions on observed effects in heavy-ion collisions.}, journal={Nuclear Physics A}, author={McLerran, L. and Skokov, V.}, year={2014}, pages={184–190} }
@article{koverda_skokov_2014, title={Coupled phase transitions under periodic perturbation}, volume={59}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84920803996&partnerID=MN8TOARS}, DOI={10.1134/S1028335814070039}, number={7}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2014}, pages={291–294} }
@inproceedings{berényi_varró_lévai_skokov_2014, title={Describing pair production in inhomogeneous external fields with the Dirac-Heisenberg-Wigner formalism}, volume={78}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84907483884&partnerID=MN8TOARS}, DOI={10.1051/epjconf/20147803001}, abstractNote={In this contribution we present results on pair production from vacuum in QED in case of inhomogeneous external electric fields. The central tool of our description is the relativistic one particle single-time Wigner-function, that describes the evolution of the e+e− densities in phase-space. We compare the influence of homogeneous and inhomogeneous external fields, and find that the inhomogeneity near the Compton-scale increases particle production proportionally to the duration of the electric pulse. We also find, that when the inhomogeneity is restricted to a single direction, a significant component of the pair yield originates from the edge or surface where the electric field gradients are large, in agreement with the prediction of Heisenberg.}, booktitle={EPJ Web of Conferences}, author={Berényi, Dániel and Varró, Sándor and Lévai, Péter and Skokov, Vladimir V.}, editor={Varró, S. and Ádám, P.Editors}, year={2014}, pages={03001} }
@article{faizullin_vinogradov_skokov_koverda_2014, title={Formation of gas hydrate during crystallization of ethane-saturated amorphous ice}, volume={88}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84906872134&partnerID=MN8TOARS}, DOI={10.1134/S0036024414100124}, number={10}, journal={Russian Journal of Physical Chemistry A}, author={Faizullin, M.Z. and Vinogradov, A.V. and Skokov, V.N. and Koverda, V.P.}, year={2014}, pages={1706–1711} }
@article{skokov_sergeev_bykov_krylov_kuteev_timokhin_wagner_2014, title={Li dust injection experiments into T-10 tokamak}, volume={89}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84914167494&partnerID=MN8TOARS}, DOI={10.1016/j.fusengdes.2014.02.065}, abstractNote={An improved 0D transport model has been applied to model the deuterium, lithium and carbon densities of T-10 plasmas during Li dust injection. The deuterium recycling coefficient is found to drop from 0.92 to 0.80 during Li dust injection at the expense of higher Zeff values. The dust injection results are compared with the alternative techniques, Li pellet injection and Li evaporation. Dust injection provides the best recycling conditions at the lowest levels of Li consumption.}, number={12}, journal={Fusion Engineering and Design}, author={Skokov, V.G. and Sergeev, V.Y. and Bykov, A.S. and Krylov, S.V. and Kuteev, B.V. and Timokhin, V.M. and Wagner, F.}, year={2014}, pages={2816–2821} }
@article{morita_skokov_friman_redlich_2014, title={Net baryon number probability distribution near the chiral phase transition}, volume={74}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84896715086&partnerID=MN8TOARS}, DOI={10.1140/epjc/s10052-013-2706-1}, abstractNote={We discuss the properties of the net baryon number probability distribution near the chiral phase transition to explore the effect of critical fluctuations. Our studies are performed within Landau theory, where the coefficients of the polynomial potential are parametrized, so as to reproduce the mean-field (MF), the $$Z(2)$$ , and the $$O(4)$$ scaling behaviors of the cumulants of the net baryon number. We show that in the critical region the structure of the probability distribution changes, depending on the values of the critical exponents. In the MF approach, as well as in the $$Z(2)$$ universality class, the contribution of the singular part of the thermodynamic potential tends to broaden the distribution. By contrast, in the model with $$O(4)$$ scaling, the contribution of the singular part results in a narrower net baryon number probability distribution with a wide tail.}, number={1}, journal={European Physical Journal C}, author={Morita, Kenji and Skokov, Vladimir and Friman, Bengt and Redlich, Krzysztof}, year={2014}, pages={1–9} }
@article{hidaka_lin_pisarski_satow_skokov_2014, title={Production of dilepton/photon in semi-quark gluon plasma}, volume={931}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84922282044&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2014.10.014}, abstractNote={We consider the production of dilepton/photon in deconfined Quark Gluon Plasma (QGP). In the region of semi-QGP, effective color degrees of freedom are suppressed by a small value of the Polyakov loop. We find that the effect of the Polyakov loop leads to modest enhancement in the dilepton production rate but strong suppression in the photon production rate. The suppression of photon production in the QGP phase offers a possible explanation to the puzzle of photon elliptic flow.}, journal={Nuclear Physics A}, author={Hidaka, Yoshimasa and Lin, Shu and Pisarski, Robert D. and Satow, Daisuke and Skokov, Vladimir V.}, editor={Braun-Munzinger, Peter and Friman, Bengt and Stachel, JohannaEditors}, year={2014}, pages={681–685} }
@article{koverda_skokov_2014, title={Stochastic resonance and 1/f noise at coupled phase transitions}, volume={393}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84886593380&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2013.09.050}, abstractNote={The system of two nonlinear stochastic equations simulating 1/f fluctuations during the interaction of nonequilibrium phase transitions in the presence of an external periodic action has been studied by numerical methods. It is shown that in the system there appears stochastic resonance, which leads to an amplification of the output periodic signal under the action of noise. To a random process with a 1/f power spectrum corresponds the maximum Gibbs–Shannon informational entropy. At stochastic resonance the informational entropy is minimum. A new behavior of a two-dimensional system at stochastic resonance has been revealed: at low frequencies of a periodic action with an increased white noise intensity the system trajectories are limited by two mutually perpendicular directions—anisotropic stochastic resonance. With a further increase in the white noise intensity in the system one can observe “ordinary” stochastic resonance, when the increasing intensity of fluctuations in the vicinity of the driving frequency is smeared in the directions.}, journal={Physica A: Statistical Mechanics and its Applications}, author={Koverda, V.P. and Skokov, V.N.}, year={2014}, pages={173–181} }
@article{skokov_koverda_2014, title={Stochastic resonance in a nonlinear system with a 1/f spectrum}, volume={59}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84901438339&partnerID=MN8TOARS}, DOI={10.1134/S1063784214050296}, number={5}, journal={Technical Physics}, author={Skokov, V.N. and Koverda, V.P.}, year={2014}, pages={637–641} }
@article{vinogradov_skokov_koverda_2014, title={Stochastic resonant response in the transient boiling regime with periodic heat release}, volume={59}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84920288373&partnerID=MN8TOARS}, DOI={10.1134/S1028335814100097}, number={10}, journal={Doklady Physics}, author={Vinogradov, A.V. and Skokov, V.N. and Koverda, V.P.}, year={2014}, pages={449–452} }
@article{bozek_bzdak_skokov_2014, title={The rapidity dependence of the average transverse momentum in p + Pb collisions at the LHC: The Color Glass Condensate versus hydrodynamics}, volume={728}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84903641379&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2013.12.034}, abstractNote={We show that in proton–lead (p + Pb) collisions at the LHC, the Color Glass Condensate (CGC) and hydrodynamics lead to qualitatively different behavior of the average transverse momentum, 〈p⊥〉, with the particle rapidity. In hydrodynamics, the 〈p⊥〉 decreases as one goes from zero rapidity, y=0, to the proton fragmentation region since the number of particles decreases. In contrast, in the CGC the saturation momentum increases as one goes from y=0 to the proton fragmentation region, and so the 〈p⊥〉 increases. At the LHC, the difference between the two models may be large enough to be tested experimentally.}, number={1}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Bozek, Piotr and Bzdak, Adam and Skokov, Vladimir}, year={2014}, pages={662–665} }
@article{koverda_skokov_2013, title={Anisotropic stochastic resonance in the system with a 1/f spectrum}, volume={58}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84886771795&partnerID=MN8TOARS}, DOI={10.1134/S1028335813100108}, number={10}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2013}, pages={433–437} }
@article{bzdak_skokov_2013, title={Anisotropy of photon production: Initial eccentricity or magnetic field}, volume={110}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84877607413&partnerID=MN8TOARS}, DOI={10.1103/PhysRevLett.110.192301}, abstractNote={Recent measurements of the azimuthal anisotropy of direct photons in heavy-ion collisions at the energies of Relativistic Heavy Ion Collider show that it is of the same order as the hadronic one. This finding appears to contradict the expected dominance of photon production from a quark-gluon plasma at an early stage of a heavy-ion collision. A possible explanation of the strong azimuthal anisotropy of the photons, given recently, is based on the presence of a large magnetic field in the early phase of a collision. In this Letter, we propose a method to experimentally measure the degree to which a magnetic field in heavy-ion collisions is responsible for the observed anisotropy of photon production. The experimental test proposed in this Letter may potentially change our understanding of the nonequilibrium stage and possible thermalization in heavy-ion collisions.}, number={19}, journal={Physical Review Letters}, author={Bzdak, Adam and Skokov, Vladimir}, year={2013}, pages={192301} }
@article{bzdak_skokov_2013, title={Average transverse momentum of hadrons in proton-nucleus collisions in the wounded nucleon model}, volume={726}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84884701531&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2013.08.021}, abstractNote={In the wounded nucleon model, a proton–nucleus (p + A) collision is a superposition of independent nucleon–nucleon collisions. We use this model to calculate the average transverse momentum of pions, kaons and protons in high energy p + A collisions. For the same number of produced particles, because the number of participants differs, in the wounded nucleon model the transverse momentum of hadrons can differ between p + p and p + A collisions. In this model we find that the average transverse momentum in high multiplicity p + A collisions depends weakly on the number of produced particles, and underestimates the preliminary experimental data at the LHC. The difference is small for pions and greater for kaons and protons. The magnitude of this difference is consistent with hydrodynamic expectations.}, number={1-3}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Bzdak, Adam and Skokov, Vladimir}, year={2013}, pages={408–411} }
@article{bzdak_koch_skokov_2013, title={Baryon number conservation and the cumulants of the net proton distribution}, volume={87}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84872726497&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.87.014901}, abstractNote={We discuss the modification of the cumulants of the net baryon and net proton distributions due to the global conservation of baryon number in heavy-ion collisions. Corresponding probability distributions and their cumulants are derived analytically. We show that the conservation of baryon number results in a substantial decrease of higher order cumulants. Based on our studies, we propose an observable that is insensitive to the modifications due to baryon number conservation.}, number={1}, journal={Physical Review C - Nuclear Physics}, author={Bzdak, Adam and Koch, Volker and Skokov, Vladimir}, year={2013}, pages={014901} }
@article{bzdak_skokov_2013, title={Decisive Test of Color Coherence in Proton-Nucleus Collisions at the LHC}, volume={111}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84886792516&partnerID=MN8TOARS}, DOI={10.1103/physrevlett.111.182301}, abstractNote={Proton-nucleus collisions ($p+A$) at LHC energies provide a rigorous test of color glass condensate (CGC), a model proposed to describe the high energy limit of quantum chromodynamics. In the CGC the average multiplicity of charged particles at midrapidity in $p+A$ collisions depends logarithmically on the number of participants, ${N}_{\mathrm{part}}$. In contrast, the wounded nucleon model of independent nucleon-nucleon scatterings, verified at RHIC energies, predicts that multiplicity in $p+A$ depends linearly on ${N}_{\mathrm{part}}$. We argue that the dependence of mean multiplicity on ${N}_{\mathrm{part}}$ in $p+A$ collisions at LHC energies can single out a model of particle production, thus offering a stringent test of the CGC and the wounded nucleon model. Based on this observation we propose a novel experimental test of color coherence in $p+A$ collisions.}, number={18}, journal={Phys. Rev. Lett.}, publisher={American Physical Society (APS)}, author={Bzdak, Adam and Skokov, Vladimir}, year={2013}, month={Oct}, pages={182301} }
@article{pavlenko_koverda_reshetnikov_surtaev_tsoi_mazheiko_busov_skokov_2013, title={Disintegration of flows of superheated liquid films and jets}, volume={22}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84881256981&partnerID=MN8TOARS}, DOI={10.1134/S1810232813030028}, number={3}, journal={Journal of Engineering Thermophysics}, author={Pavlenko, A.N. and Koverda, V.P. and Reshetnikov, A.V. and Surtaev, A.S. and Tsoi, A.N. and Mazheiko, N.A. and Busov, K.A. and Skokov, V.N.}, year={2013}, pages={174–193} }
@inproceedings{skokov_2013, title={Effective model for deconfinement at high temperature}, volume={446}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84891313447&partnerID=MN8TOARS}, DOI={10.1088/1742-6596/446/1/012032}, abstractNote={In this talk I consider the deconfining phase transition at nonzero temperature in a SU(N) gauge theory, using a matrix model. I present some results including the position of the deconfining critical endpoint, where the first order transition for deconfinement is washed out by the presence of massive, dynamical quarks, and properites of the phase transition in the limit of large N. I show that the model is soluble at infinite N, and exhibits a Gross-Witten-Wadia transition.}, number={1}, booktitle={Journal of Physics: Conference Series}, author={Skokov, Vladimir}, editor={Bleicher, Markus and othersEditors}, year={2013}, pages={012032} }
@inproceedings{koch_bzdak_skokov_2013, title={Fluctuations and the QCD phase diagram}, volume={1520}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84876390966&partnerID=MN8TOARS}, DOI={10.1063/1.4795962}, abstractNote={We briefly review howfluctuation measurements may help to reveal the properties of the QCD phase diagram. We further discuss various background effects, such as charge conservation, which contribute to fluctuation observables and which need to be well understood before definitive conclusions about a possible phase structure can be drawn.}, number={1}, booktitle={AIP Conference Proceedings}, publisher={AIP Publishing}, author={Koch, Volker and Bzdak, Adam and Skokov, Vladimir}, editor={Gonçalves, Victor P. and Silva, Mario L. L. and Santana Amaral, João Thiago and Machado, Magno V. T.Editors}, year={2013}, pages={232–237} }
@article{morita_friman_redlich_skokov_2013, title={Net quark number probability distribution near the chiral crossover transition}, volume={88}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84885132605&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.88.034903}, abstractNote={We investigate properties of the probability distribution of the net quark number near the chiral crossover transition in the quark-meson model. The calculations are performed within the functional renormalization group approach, as well as in the mean-field approximation. We find that there is a substantial influence of the underlying chiral phase transition on the properties of the probability distribution. In particular, for a physical pion mass, the distribution which includes the effect of mesonic fluctuations, differs considerably from both, the mean-field and Skellam distributions. The latter is considered as a reference for a noncritical behavior. A characteristic feature of the net quark number probability distribution is that, in the vicinity of the chiral crossover transition in the $O(4)$ universality class, it is narrower than the corresponding mean-field and Skellam function. We study the volume dependence of the probability distribution, as well as the resulting cumulants, and discuss their approximate scaling properties.}, number={3}, journal={Physical Review C - Nuclear Physics}, author={Morita, Kenji and Friman, Bengt and Redlich, Krzysztof and Skokov, Vladimir}, year={2013}, pages={034903} }
@article{skokov_2013, title={Photon azimuthal anizotropy and magnetic field in heavy-ion collisions}, volume={432}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84880024666&partnerID=MN8TOARS}, DOI={10.1088/1742-6596/432/1/012021}, abstractNote={Recent measurements of the azimuthal anisotropy of direct photons in heavy-ion collisions at the energies of RHIC showed that it is of the same order as the hadronic one. This finding appears to contradict the expected dominance of photon production from a quark-gluon plasma at an early stage of a heavy-ion collision. A possible explanation of the strong azimuthal anisotropy of the photons, given recently, is based on the presence of a large magnetic field in the early phase of a collision. In this talk, we consider a novel photon production mechanism stemming from the conformal anomaly of QCDxQED and the existence of strong (electro)magnetic fields in heavy ion collisions. Using the hydrodynamical description of the bulk modes of QCD plasma, we show that this mechanism leads to the photon production yield that is comparable to the yield from conventional sources. The comparison of the results to the data from the PHENIX collaboration, show that this mechanism might be the most responsible for the observed azimuthal anisotropy of photons.}, number={1}, journal={J. Phys.: Conf. Ser.}, publisher={IOP Publishing}, author={Skokov, Vladimir}, editor={Alexandru, Andrei and Bazavov, Alexei and Liu, Keh-FeiEditors}, year={2013}, month={Apr}, pages={012021} }
@article{pisarski_kashiwa_skokov_2013, title={Quasi-particle and matrix models of the semi Quark Gluon Plasma}, volume={904-905}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84877720126&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2013.02.177}, abstractNote={Abstract We make a simple observation about two models used to treat the region near the critical temperature of QCD, quasiparticle and matrix models. While they appear very different, we show how these two models might be related. We also present results for the temperature dependence of the ratio of the shear viscosity to the entropy in a matrix model, and suggest that quasi-particle models may behave similarly.}, journal={Nuclear Physics A}, author={Pisarski, Robert D. and Kashiwa, Koji and Skokov, Vladimir}, editor={Ullrich, Thomas and Wyslouch, Bolek and Harris, John W.Editors}, year={2013}, pages={973c–976c} }
@article{koverda_skokov_2013, title={Stability of a random process with a 1/f spectrum under deterministic action}, volume={58}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84876435017&partnerID=MN8TOARS}, DOI={10.1134/S1063784213040154}, number={4}, journal={Technical Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2013}, pages={467–470} }
@article{koverda_skokov_vinogradov_2013, title={Stability of low-frequency pulsations in a transient heat transfer regime upon phase transitions}, volume={51}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84879632594&partnerID=MN8TOARS}, DOI={10.1134/S0018151X13020119}, number={3}, journal={High Temperature}, author={Koverda, V.P. and Skokov, V.N. and Vinogradov, A.V.}, year={2013}, pages={421–425} }
@article{skokov_koverda_2013, title={Stochastic resonance in coupled phase transitions}, volume={58}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84883858145&partnerID=MN8TOARS}, DOI={10.1134/S1028335813080156}, number={8}, journal={Doklady Physics}, author={Skokov, V.N. and Koverda, V.P.}, year={2013}, pages={343–346} }
@article{skokov_friman_redlich_2013, title={Volume fluctuations and higher-order cumulants of the net baryon number}, volume={88}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84885124462&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.88.034911}, abstractNote={We consider the effect of volume fluctuations on cumulants of the net baryon number. Based on a general formalism, we derive universal expressions for the net baryon number cumulants in the presence of volume fluctuations with an arbitrary probability distribution. The relevance of these fluctuations for the baryon-number cumulants and in particular for the ratios of cumulants is assessed in the Polyakov loop extended quark-meson model within the functional renormalization group. We show that the baryon number cumulants are generally enhanced by volume fluctuations and that the critical behavior of higher order cumulants may be modified significantly.}, number={3}, journal={Physical Review C - Nuclear Physics}, author={Skokov, V. and Friman, B. and Redlich, K.}, year={2013}, pages={034911} }
@article{lin_pisarski_skokov_2013, title={Zero interface tensions at the deconfining phase transition for a matrix model of a SU(∞) gauge theory}, volume={87}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84877971770&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.87.105002}, abstractNote={Using a matrix model, we model the deconfining phase transition at nonzero temperature for a SU(N) gauge theory at large $N$. At infinite $N$ the matrix model exhibits a Gross-Witten-Wadia transition. We show that as a consequence, both the order-disorder and the order-order interface tensions vanish identically at the critical temperature $T_d$. We estimate how these quantities vanish in the matrix model as $T \rightarrow T_d$ and as $N \rightarrow \infty$. The numerical solution of the matrix model suggests possible non-monotonic behavior in $N$ for relatively small values of $N \sim 5$.}, number={10}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Lin, Shu and Pisarski, Robert D. and Skokov, Vladimir V.}, year={2013}, pages={105002} }
@article{berenyi_pasztor_skokov_levai_2012, title={Anomalous baryon production in heavy ion collisions at LHC energies}, volume={8}, url={http://inspirehep.net/record/1125584}, author={Berenyi, Daniel and Pasztor, Attila and Skokov, Vladimir and Levai, Peter}, year={2012}, month={Aug} }
@article{skokov_2012, title={Baryon and electric charge fluctuations at crossover}, volume={10}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84880578819&partnerID=MN8TOARS}, DOI={10.2478/s11534-012-0044-9}, abstractNote={Abstract We discuss the higher order cumulants of net-baryon and electric charge fluctuations as a probe of the QCD crossover. The sensitivity of the higher order cumulants in the hadron resonance gas model to an inclusion of repulsive interactions is also considered.}, number={6}, journal={Open Physics}, publisher={Walter de Gruyter GmbH}, author={Skokov, Vladimir}, year={2012}, month={Jan}, pages={1375–1378} }
@article{basar_kharzeev_kharzeev_skokov_2012, title={Conformal anomaly as a source of soft photons in heavy ion collisions}, volume={109}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84869063678&partnerID=MN8TOARS}, DOI={10.1103/PhysRevLett.109.202303}, abstractNote={We introduce a novel photon production mechanism stemming from the conformal anomaly of QCDxQED and the existence of strong (electro)magnetic fields in heavy ion collisions. Using the hydrodynamical description of the bulk modes of QCD plasma, we show that this mechanism leads to the photon production yield that is comparable to the yield from conventional sources. This mechanism also provides a significant positive contribution to the azimuthal anisotropy of photons, $v_2$, as well as to the radial "flow". We compare our results to the data from the PHENIX Collaboration.}, number={20}, journal={Physical Review Letters}, author={Basar, Gokce and Kharzeev, Dmitri and Kharzeev, Dmitri and Skokov, Vladimir}, year={2012}, pages={202303} }
@article{kashiwa_pisarski_skokov_2012, title={Critical endpoint for deconfinement in matrix and other effective models}, volume={85}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84862639332&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.85.114029}, abstractNote={We consider the position of the deconfining critical endpoint, where the first order transition for deconfinement is washed out by the presence of massive, dynamical quarks. We use an effective matrix model, employed previously to analyze the transition in the pure glue theory. If the parameters of the pure glue theory are unaffected by the presence of dynamical quarks, and if the quarks only contribute perturbatively, then for three colors and three degenerate quark flavors this quark mass is very heavy, ${m}^{\mathrm{de}}\ensuremath{\sim}2.5\text{ }\text{ }\mathrm{GeV}$, while the critical temperature ${T}_{\mathrm{de}}$ barely changes, $\ensuremath{\sim}1%$ below that in the pure glue theory. The location of the deconfining critical endpoint is a sensitive test to differentiate between effective models. For example, models with a logarithmic potential for the Polyakov loop give much smaller values of the quark mass, ${m}^{\mathrm{de}}\ensuremath{\sim}1\text{ }\text{ }\mathrm{GeV}$, and a large shift in ${T}_{\mathrm{de}}\ensuremath{\sim}10%$ lower than that in the pure glue theory.}, number={11}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Kashiwa, Kouji and Pisarski, Robert D. and Skokov, Vladimir V.}, year={2012}, pages={114029} }
@inproceedings{sergeev_bykov_khromov_gusev_kuteev_petrov_sakharov_shatalin_skokov_timokhin_et al._2012, title={Divertor heat flux measurements in Globus-M}, volume={3}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84876914315&partnerID=MN8TOARS}, booktitle={39th EPS Conference on Plasma Physics 2012, EPS 2012 and the 16th International Congress on Plasma Physics}, author={Sergeev, V.Yu. and Bykov, A.S. and Khromov, N.A. and Gusev, V.K. and Kuteev, B.V. and Petrov, Yu.V. and Sakharov, N.V. and Shatalin, S.V. and Skokov, V.G. and Timokhin, V.M. and et al.}, year={2012}, pages={1842–1845} }
@article{mclerran_pisarski_skokov_2012, title={Electroweak instantons, axions, and the cosmological constant}, volume={713}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84862674117&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2012.05.057}, abstractNote={If there is explicit violation of baryon plus lepton number at some energy scale, then the electroweak theory depends upon a {\theta}-angle. Due to a singular integration over small scale size instantons, this {\theta}-dependence is sensitive to very high momentum scales. Assuming that there is no new physics between the electroweak and Planck scales, for an electroweak axion the energy difference between the vacuum at {\theta} /= 0, and that at {\theta} = 0, is of the correct order of magnitude to be the dark energy observed in the present epoch.}, number={3}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={McLerran, Larry and Pisarski, Robert and Skokov, Vladimir}, year={2012}, pages={301–303} }
@article{bzdak_skokov_2012, title={Event-by-event fluctuations of magnetic and electric fields in heavy ion collisions}, volume={710}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84858439705&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2012.02.065}, abstractNote={We show that fluctuating proton positions in the colliding nuclei generate, on the event-by-event basis, very strong magnetic and electric fields in the direction both parallel and perpendicular to the reaction plane. The magnitude of E and B fields in each event is of the order of mπ2≈1018 Gauss. Implications on the observation of electric dipole in heavy ion collisions is discussed, and the possibility of measuring the electric conductivity of the hot medium is pointed out.}, number={1}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Bzdak, Adam and Skokov, Vladimir}, year={2012}, pages={171–174} }
@article{skokov_2012, title={Fluctuations of conserved charges in the polyakov loop extended quark-meson model at finite baryon density}, volume={5}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84862994928&partnerID=MN8TOARS}, DOI={10.5506/APhysPolBSupp.5.877}, number={3}, journal={Acta Physica Polonica B, Proceedings Supplement}, author={Skokov, V.}, editor={Turko, L.Editor}, year={2012}, pages={877–886} }
@article{pisarski_skokov_2012, title={Gross-Witten-Wadia transition in a matrix model of deconfinement}, volume={86}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84867244449&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.86.081701}, abstractNote={We study the deconfining phase transition at nonzero temperature in a $SU(N)$ gauge theory, using a matrix model which was analyzed previously at small $N$. We show that the model is soluble at infinite $N$, and exhibits a Gross-Witten-Wadia transition. In some ways, the deconfining phase transition is of first order: at a temperature ${T}_{d}$, the Polyakov loop jumps discontinuously from 0 to $\frac{1}{2}$, and there is a nonzero latent heat $\ensuremath{\sim}{N}^{2}$. In other ways, the transition is of second order: e.g., the specific heat diverges as $C\ensuremath{\sim}1/(T\ensuremath{-}{T}_{d}{)}^{3/5}$ when $T\ensuremath{\rightarrow}{T}_{d}^{+}$. Other critical exponents satisfy the usual scaling relations of a second order phase transition. In the presence of a nonzero background field $h$ for the Polyakov loop, there is a phase transition at the temperature ${T}_{h}$ where the value of the $\mathrm{\text{loop}}=\frac{1}{2}$, with ${T}_{h}<{T}_{d}$. Since $\ensuremath{\partial}C/\ensuremath{\partial}T\ensuremath{\sim}1/(T\ensuremath{-}{T}_{h}{)}^{1/2}$ as $T\ensuremath{\rightarrow}{T}_{h}^{+}$, this transition is of third order. These properties, closely analogous to those on a femtosphere at zero coupling, suggest that in infinite volume, the Gross-Witten-Wadia transition may be an infrared stable fixed point of a $SU(\ensuremath{\infty})$ gauge theory.}, number={8}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Pisarski, Robert D. and Skokov, Vladimir V.}, year={2012}, pages={081701} }
@article{sergeev_kuteev_bykov_krylov_skokov_timokhin_2012, title={Lithium technologies for edge plasma control}, volume={87}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84866974673&partnerID=MN8TOARS}, DOI={10.1016/j.fusengdes.2011.10.008}, abstractNote={Abstract We have investigated two new modes of operation been in T-10 limiter tokamak experiments with a novel rotary feeder of lithium dust. Quasi steady-state mode I and pulse mode II of dust delivery were realized in both OH and OH + ECRH disruption free plasmas at the lithium flow rate up to 2 × 10 21 atoms/s. A higher flow rate in mode II with injection rate of ∼5 × 10 21 atoms/s caused a series of minor disruptions, which was completed by discharge termination after the major disruption. The observed decreases of bolometer and D β signals, with increase of the electron density during the lithium dust injection, reveal the effects of the first wall conditioning. The lithium technology may provide inherent safety pathway for major disruption mitigation in a tokamak reactor, which requires demonstration in contemporary tokamak experiments.}, number={10}, journal={Fusion Engineering and Design}, author={Sergeev, V.Y. and Kuteev, B.V. and Bykov, A.S. and Krylov, S.V. and Skokov, V.G. and Timokhin, V.M.}, year={2012}, pages={1765–1769} }
@article{koverda_skokov_2012, title={Maximum entropy and determinate action on random processes with a 1/f spectrum}, volume={57}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84863639419&partnerID=MN8TOARS}, DOI={10.1134/S1028335812060080}, number={6}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2012}, pages={229–232} }
@article{koverda_skokov_2012, title={Maximum entropy and stability of a random process with a 1 f power spectrum under deterministic action}, volume={391}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84865755160&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2012.07.016}, abstractNote={Abstract The principle of maximum entropy has been used to analyze the stability of the resulting process observed during the interaction of a random process with a 1 / f spectrum and a deterministic action in lumped and distributed systems of nonlinear stochastic differential equations describing the coupled nonequilibrium phase transitions. Under the action of a harmonic force the stable resulting process is divided into two branches depending on the amplitude of the harmonic force. Under the action of exponential relaxation in a lumped system with an increase in the dumping coefficient the power spectrum of the resulting process becomes a spectrum of the Lorentz type.}, number={23}, journal={Physica A: Statistical Mechanics and its Applications}, author={Koverda, V.P. and Skokov, V.N.}, year={2012}, pages={5850–5857} }
@article{koverda_skokov_2012, title={Maximum entropy in a nonlinear system with a 1 f power spectrum}, volume={391}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-80054026530&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2011.07.015}, abstractNote={An analysis of master–slave hierarchy has been made in a system of nonlinear stochastic equations describing fluctuations with a 1/f spectrum at coupled nonequilibrium phase transitions. It is shown that for a system of stochastic equations there exist different probability distribution functions with power-law (non-Gaussian) and Gaussian tails. The governing equation of a system has a probability distribution function with Gaussian tails. Therefore, distribution functions for governing equations may be used for finding the Gibbs–Shannon entropy. The local maximum of this entropy has been found. It corresponds to the tuning of the parameters of the equations to criticality and points to the stability of fluctuations with a 1/f spectrum. The Tsallis entropy and the Renyi entropy for the probability distribution functions with power-law tails have been calculated. The parameter q, which is included in the determination of these entropies has been found from the condition that the coordinates of the maximum Gibbs–Shannon entropy coincide with the maxima of the Tsallis and Renyi entropies.}, number={1-2}, journal={Physica A: Statistical Mechanics and its Applications}, author={Koverda, V.P. and Skokov, V.N.}, year={2012}, pages={21–28} }
@article{braun-munzinger_friman_karsch_redlich_skokov_2012, title={Net charge probability distributions in heavy ion collisions at chemical freeze-out}, volume={880}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84857723584&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2012.02.010}, abstractNote={We explore net charge probability distributions in heavy ion collisions within the hadron resonance gas model. The distributions for strangeness, electric charge and baryon number are derived. We show that, within this model, net charge probability distributions and the resulting fluctuations can be computed directly from the measured yields of charged and multi-charged hadrons. The influence of multi-charged particles and quantum statistics on the shape of the distribution is examined. We discuss the properties of the net proton distribution along the chemical freeze-out line. The model results presented here provide a theoretical baseline in the search for a relation between the chemical freeze-out and the QCD cross-over line at RHIC and LHC energies.}, journal={Nuclear Physics A}, author={Braun-Munzinger, P. and Friman, B. and Karsch, F. and Redlich, K. and Skokov, V.}, year={2012}, pages={48–64} }
@article{skokov_friman_redlich_2012, title={Non-perturbative dynamics and charge fluctuations in effective chiral models}, volume={708}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84856421124&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2012.01.022}, abstractNote={We discuss the properties of fluctuations of the electric charge in the vicinity of the chiral crossover transition within effective chiral models at finite temperature and vanishing net baryon density. The calculation includes non-perturbative dynamics implemented within the functional renormalization group approach. We study the temperature dependence of the electric charge susceptibilities in the linear sigma model and explore the role of quantum statistics. Within the Polyakov loop extended quark-meson model, we study the influence of the coupling of quarks to mesons and to an effective gluon field on charge fluctuations. We find a clear signal for the chiral crossover transition in the fluctuations of the electric charge. Accordingly, we stress the role of higher order cumulants as probes of criticality related to the restoration of chiral symmetry and deconfinement.}, number={1-2}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Skokov, V. and Friman, B. and Redlich, K.}, year={2012}, pages={179–185} }
@article{skokov_2012, title={Phase diagram in an external magnetic field beyond a mean-field approximation}, volume={85}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84857702832&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.85.034026}, abstractNote={The phase structure of the Polyakov loop-extended chiral quark-meson model is explored in a nonperturbative approach, beyond a mean-field approximation, in the presence of a magnetic field. We show that by including meson fluctuations one cannot resolve the qualitative discrepancy on the dependence of the crossover transition temperature in a non-zero magnetic field between effective model predictions and recent lattice results (arXiv:1111.4956).We compute the curvature of the crossover line in the T - {\mu}_B plane at a non-zero magnetic field and show that the curvature increases with increasing magnetic field. On the basis of QCD inequalities, we also argue that, at least in the large Nc limit, a chiral critical end point and, consequently, a change from crossover to a first-order chiral phase transition are excluded at zero baryon chemical potential and non-zero magnetic field.}, number={3}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Skokov, V.}, year={2012}, pages={034026} }
@article{morita_skokov_friman_redlich_2012, title={Probing deconfinement in the polyakov-loop extended Nambu-Jona-Lasinio model at imaginary chemical potential}, volume={5}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84862995054&partnerID=MN8TOARS}, DOI={10.5506/APhysPolBSupp.5.803}, abstractNote={The phase structure of Polyakov-loop extended Nambu-Jona-Lasinio (PNJL) model is explored at imaginary chemical potential, with particular emphasis on the deconfinement transition. We point out that the statistical confinement nature of the model naturally leads to characteristic dependence of the chiral condensate $ $ on $\theta=\mu_I/T$. We introduce a dual parameter for the deconfinement transition by making use of this dependence. By changing a four-fermion coupling constant, we tune the location of the critical endpoint of the deconfinement transition.}, number={3}, journal={Acta Physica Polonica B, Proceedings Supplement}, author={Morita, Kenji and Skokov, Vladimir and Friman, Bengt and Redlich, Krzysztof}, editor={Turko, L.Editor}, year={2012}, pages={803–813} }
@article{reshetnikov_skokov_koverda_2012, title={Relaxation and power spectra of low-frequency fluctuations in foams}, volume={53}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84871702825&partnerID=MN8TOARS}, DOI={10.1134/S0021894412060041}, number={6}, journal={Journal of Applied Mechanics and Technical Physics}, author={Reshetnikov, A.V. and Skokov, V.N. and Koverda, V.P.}, year={2012}, pages={834–838} }
@inproceedings{berényi_lévai_skokov_2012, title={Simulation of pair production in extreme strong em fields}, volume={1462}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84873195877&partnerID=MN8TOARS}, DOI={10.1063/1.4736749}, abstractNote={In this article we review a theoretical framework for pair production from strong external electromagnetic fields. We propose a numerical method to solve the resulting equations of motion and present results for both cases of spatially homogeneous and inhomogeneous electric fields.}, booktitle={AIP Conference Proceedings}, author={Berényi, D. and Lévai, P. and Skokov, V.}, year={2012}, pages={5–8} }
@inproceedings{kondrokhina_podurets_ignatova_nadezhin_skokov_malyshev_bat’kov_2012, title={Space distribution of damage at early stage of spall fracture in copper}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84905454824&partnerID=MN8TOARS}, booktitle={19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012}, author={Kondrokhina, I.N. and Podurets, A.M. and Ignatova, O.N. and Nadezhin, S.S. and Skokov, V.I. and Malyshev, A.N. and Bat’kov, Yu.V.}, year={2012} }
@inproceedings{arinin_kryuchkov_ogorodnikov_raevsky_panov_peshkov_skokov_tyupanova_2012, title={Spall fracture of beryllium under shockwave loading}, volume={1426}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84861961013&partnerID=MN8TOARS}, DOI={10.1063/1.3686464}, abstractNote={We present investigations of beryllium spall fracture with samples of dimensions ø 65×7 mm, which were made via vacuum hot pressing. Samples were loaded at normal incidence by a detonation wave of the explosive charge of TG 5/5 composition, 7, 14 and 30 mm in thickness, which gave shockwave stresses of 21-25 GPa within the sample. Spall fractures formed as the sample unloading at an air gap. A velocity profile was measured at the free boundary using VISAR laser interferometer, a spall layer thickness was measured with two-frame impulse X-ray radiography, and the shockwave profile was measured via a manganin-based gauge in a fluoroplastic base in the course of deceleration of a spall layer and of a basic part of beryllium. Hugoniot dynamic yield strength (YHE) and spall strength (σP) were measure as 0.69-0.73 GPa and 0.85±0.03 GPa, respectively, at a strain rate of ε ~104 s-1 in the unloading part of the incident pulse. A weak dependence between the spall layer thickness and HE layer thickness was recorded in tests. The weak dependence is not described through existing damage models and points to the need to develop more sophisticated models.}, booktitle={AIP Conference Proceedings}, author={Arinin, V.A. and Kryuchkov, D.V. and Ogorodnikov, V.A. and Raevsky, V.A. and Panov, K.N. and Peshkov, V.V. and Skokov, V.I. and Tyupanova, O.A.}, year={2012}, pages={1073–1076} }
@inproceedings{timokhin_sergeev_skokov_bykov_kuteev_krupin_klyuchnikov_krylov_2012, title={T-10 tokamak plasma discharge control by means of Li dust jet injection}, volume={3}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84876915138&partnerID=MN8TOARS}, booktitle={39th EPS Conference on Plasma Physics 2012, EPS 2012 and the 16th International Congress on Plasma Physics}, author={Timokhin, V.M. and Sergeev, V.Yu. and Skokov, V.G. and Bykov, A.S. and Kuteev, B.V. and Krupin, V.A. and Klyuchnikov, L.A. and Krylov, S.V.}, year={2012}, pages={1702–1705} }
@article{reshetnikov_busov_mazheiko_skokov_koverda_2012, title={Transient behavior of superheated water jets boiling}, volume={19}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84867406612&partnerID=MN8TOARS}, DOI={10.1134/S0869864312020151}, number={2}, journal={Thermophysics and Aeromechanics}, author={Reshetnikov, A.V. and Busov, K.A. and Mazheiko, N.A. and Skokov, V.N. and Koverda, V.P.}, year={2012}, pages={329–336} }
@article{nakano_skokov_friman_2012, title={Transport coefficients of O(N) scalar field theories close to the critical point}, volume={85}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84861633835&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.85.096007}, abstractNote={We investigate the critical dynamics of $O(N)$-symmetric scalar field theories to determine the critical exponents of transport coefficients as a second-order phase transition is approached from the symmetric phase. A set of stochastic equations of motion for the slow modes is formulated, and the long-wavelength dynamics is examined for an arbitrary number of field components $N$ in the framework of the dynamical renormalization group within the $\ensuremath{\epsilon}$ expansion. We find that for a single component scalar field theory, $N=1$, the system reduces to the model C of critical dynamics, whereas for $N>1$, the model G is effectively restored owing to dominance of $O(N)$-symmetric charge fluctuations. In both cases, the shear viscosity remains finite in the critical region. On the other hand, we find that the bulk viscosity diverges as the correlation length squared, for $N=1$, while it remains finite for $N>1$.}, number={9}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Nakano, Eiji and Skokov, Vladimir and Friman, Bengt}, year={2012}, pages={096007} }
@article{voskresensky_skokov_2012, title={Viscosity and thermal conductivity effects at first-order phase transitions in heavy-ion collisions}, volume={75}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84873825453&partnerID=MN8TOARS}, DOI={10.1134/S1063778812050286}, abstractNote={Effects of viscosity and thermal conductivity on the dynamics of first-order phase transitions are studied. The nuclear gas-liquid and hadron-quark transitions in heavy-ion collisions are considered. We demonstrate that at nonzero thermal conductivity, κ ≠ 0, onset of spinodal instabilities occurs on an isothermal spinodal line, whereas for κ = 0 instabilities take place at lower temperatures, on an adiabatic spinodal.}, number={6}, journal={Physics of Atomic Nuclei}, author={Voskresensky, D.N. and Skokov, V.V.}, year={2012}, pages={770–775} }
@article{levai_berenyi_pasztor_skokov_2011, title={Anomalous baryon production and its interplay with jet energy loss at RHIC and LHC energies}, volume={38}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84055199595&partnerID=MN8TOARS}, DOI={10.1088/0954-3899/38/12/124155}, abstractNote={Hadron production consists traditionally of two main channels in the intermediate-pT region at RHIC and LHC energies: parton coalescence/recombination and jet fragmentation. We have studied a new channel, namely hadron production connected to the appearance of strong time-dependent coherent field in heavy ion collisions. In the momentum window of 5 GeV/c α spectrum in nonequilibrium phase transitions in a spatially distributed system}, volume={55}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-77951726886&partnerID=MN8TOARS}, DOI={10.1134/S106378421004002X}, number={4}, journal={Technical Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2010}, pages={442–448} }
@article{faizullin_skokov_koverda_2010, title={Glass transition and crystallization of water and aqueous solutions of organic liquids}, volume={356}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-77953292663&partnerID=MN8TOARS}, DOI={10.1016/j.jnoncrysol.2010.03.017}, abstractNote={Glass transition and crystallization of water and aqueous solutions of 1,2-dichloroethane, acetone and 1,2,4-trimethylbenzene have been studied in the range from 77 to 200 K by changes in dielectric properties and specific volumes of amorphous condensates obtained by the vapor quenching method. Heating of water amorphous condensates at a rate of 12 K/min exhibits a glass transition temperature of 138 K and a crystallization temperature of 167 K. Concentration dependences of glass transition and crystallization temperatures for these mixture condensates have been obtained.}, number={23-24}, journal={Journal of Non-Crystalline Solids}, author={Faizullin, M.Z. and Skokov, V.N. and Koverda, V.P.}, year={2010}, pages={1153–1157} }
@article{skokov_koverda_vinogradov_reshetnikov_2010, title={Low frequency fluctuations of laser beam intensity run through the system of cavitation water clusters}, volume={17}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-77955814603&partnerID=MN8TOARS}, DOI={10.1134/S0869864310010117}, number={1}, journal={Thermophysics and Aeromechanics}, author={Skokov, V.N. and Koverda, V.P. and Vinogradov, A.V. and Reshetnikov, A.V.}, year={2010}, pages={99–106} }
@article{skokov_koverda_vinogradov_reshetnikov_2010, title={Low-frequency fluctuations with 1/f ^{α} power spectrum in transient modes of water boiling on a wire heater}, volume={48}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-78049370959&partnerID=MN8TOARS}, DOI={10.1134/S0018151X10050123}, number={5}, journal={High Temperature}, author={Skokov, V.N. and Koverda, V.P. and Vinogradov, A.V. and Reshetnikov, A.V.}, year={2010}, pages={706–712} }
@article{skokov_stokic_friman_redlich_2010, title={Meson fluctuations and thermodynamics of the Polyakov-loop-extended quark-meson model}, volume={82}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-77955634167&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.82.015206}, abstractNote={Thermodynamics and the phase structure of the Polyakov loop-extended two flavor chiral quark-meson model (PQM) are explored. The analysis of the PQM model is based on the functional renormalization group (FRG) method. An appropriate truncation of the effective action with quarks coupled to background gluonic fields is introduced. Within this scheme, we derive the renormalization group flow equation for the scale-dependent thermodynamic potential at finite temperature and density in the presence of a symmetry breaking external field. The influence of fluctuations and of the background gluon field on the properties of net-quark number density fluctuations and their higher moments is explored. We study the dependence of the kurtosis of quark number fluctuations on the pion mass and show that, in the presence of a symmetry breaking term, the fluctuations lead to a smoothing of observables near the crossover transition.}, number={1}, journal={Physical Review C - Nuclear Physics}, author={Skokov, V. and Stokic, B. and Friman, B. and Redlich, K.}, year={2010}, pages={015206} }
@article{levai_skokov_2010, title={Nonperturbative enhancement of heavy quark-pair production in a strong SU(2) color field}, volume={82}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-78650703791&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.82.074014}, abstractNote={Non-perturbative charm and bottom quark-pair production is investigated in the early stage of heavy ion collisions. Following our earlier works, the time-dependent study is based on a kinetic description of fermion-pair production in strong non-Abelian fields. We introduce time-dependent chromo-electric external field with a pulse-like time evolution, which simulates the overlap of two colliding heavy ions. The calculations is performed in a SU(2) color model with finite current quark masses. Yields of heavy quark-pairs are compared to the ones of light and strange quark-pairs. We show that the small inverse duration time of the field pulse determines the efficiency of the quark-pair production. Thus we do not see the expected suppression for heavy quark production, as follows from the Schwinger formula for constant field, but rather an enhanced heavy quark production at ultrarelativistic energies. We convert pulse duration time-dependent results into collisional energy dependence and introduce flavour-dependent energy string tensions, which can be used in string based model calculations at RHIC and LHC energies.}, number={7}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Levai, Peter and Skokov, Vladimir}, year={2010}, pages={074014} }
@inproceedings{blaschke_skokov_voronov_wambach_zablocki_2010, title={Preface}, volume={7}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84921685572&partnerID=MN8TOARS}, DOI={10.1051/epjconf/20100700001}, booktitle={EPJ Web of Conferences}, author={Blaschke, D. and Skokov, V. and Voronov, V. and Wambach, J. and Zablocki, D.}, year={2010} }
@book{blaschke_skokov_voronov_wambach_zablocki_2010, title={Proceedings, Helmholtz International Summer School on Dense matter in heavy-ion collisions and astrophysics (DM 2008)}, url={http://inspirehep.net/record/1095196}, journal={EPJ Web Conf.}, year={2010} }
@inproceedings{redlich_friman_skokov_2010, title={The influence of fluctuations on thermodynamics near chiral phase transition}, volume={186}, url={http://inspirehep.net/record/870471}, DOI={10.1143/PTPS.186.485}, abstractNote={We discuss the influence of fluctuations on thermodynamics near the chiral phase transition within Polyakov loop extended quark--meson model based on the functional renormalization group (FRG) method. We include the gluon fields in the FRG flow equation self-consistently on the mean-field level. We focus on the properties of the phase diagram and net-baryon number fluctuations.}, booktitle={Prog.Theor.Phys.Suppl.}, author={Redlich, Krzysztof and Friman, Bengt and Skokov, Vladimir}, editor={Ohnishi, Akira and Jido, Daisuke and Dote, Akinobu and Fujii, Hirotsugu and Hirenzaki, Satoru and Hyodo, Tetsuo and Iida, Kei and Tachibana, MotoiEditors}, year={2010}, pages={485–490} }
@article{redlich_friman_skokov_2010, title={The influence of quantum fluctuations on thermodynamics near chiral phase transition}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-79953307906&partnerID=MN8TOARS}, number={SUPPL. 186}, journal={Progress of Theoretical Physics}, author={Redlich, K. and Friman, B. and Skokov, V.}, year={2010}, pages={485–490} }
@article{gogokhia_vasuth_skokov_2010, title={The non-perturbative analytical equation of state for the gluon matter. I}, volume={37}, url={http://inspirehep.net/record/813971}, DOI={10.1088/0954-3899/37/7/075015}, abstractNote={The effective potential approach for composite operators has been generalized to non-zero temperatures in order to derive equation of state for the pure SU(3) Yang-Mills fields from first principles. In the absence of external sources it is nothing but the vacuum energy density. The key element of this derivation was an introduction of the temperature dependence into the expression for the Bag constant. Such obtained non-perturbative analytical equation of state for the gluon matter does not depend on the coupling constant, only the dependence on the mass gap, which is responsible for the large-scale structure of the QCD ground state, is present. The important thermodynamic quantities such as the pressure, energy and entropy densities, etc. have been calculated. We have shown explicitly that the pressure may continuously change its regime at $T_c=266.5 Mev$. All other thermodynamic quantities are to be understood to have drastic changes in their regimes at this point. The proposed analytical approach makes it possible to controll thermodynamics of the gluon matter at low temperatures below $T_c$ for the first time. We automatically reproduce the so-called "fuzy"-type bag models properties because of the mass gap explicit presence in our equation of state. We have also analytically calculated the NP gluon condensate as a function of temperature.}, journal={J.Phys.G}, author={Gogokhia, V. and Vasuth, M. and Skokov, V.V.}, year={2010}, pages={075015} }
@article{skokov_voskresensky_2010, title={Thermal conductivity in dynamics of first-order phase transitions}, volume={847}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-77957662530&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2010.07.006}, abstractNote={Effects of thermal conductivity on the dynamics of first-order phase transitions are studied. Important consequences of a difference of the isothermal and adiabatic spinodal regions are discussed. We demonstrate that in hydrodynamical calculations at non-zero thermal conductivity, κ≠0, onset of the spinodal instability occurs, when the system trajectory crosses the isothermal spinodal line. Only for κ=0 it occurs at a cross of the adiabatic spinodal line. Therefore ideal hydrodynamics is not suited for an appropriate description of first order phase transitions.}, number={3-4}, journal={Nuclear Physics A}, author={Skokov, V.V. and Voskresensky, D.N.}, year={2010}, pages={253–267} }
@article{skokov_friman_nakano_redlich_schaefer_2010, title={Vacuum fluctuations and the thermodynamics of chiral models}, volume={82}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-77956826410&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.82.034029}, abstractNote={We consider the thermodynamics of chiral models in the mean-field approximation and discuss the relevance of the (frequently omitted) fermion vacuum loop. Within the chiral quark-meson model and its Polyakov loop extended version, we show that the fermion vacuum fluctuations can change the order of the phase transition in the chiral limit and strongly influence physical observables. We compute the temperature-dependent effective potential and baryon-number susceptibilities in these models, with and without the vacuum term, and explore the cutoff and the pion mass dependence of the susceptibilities. Finally, in the renormalized model the divergent vacuum contribution is removed using dimensional regularization.}, number={3}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Skokov, V. and Friman, B. and Nakano, E. and Redlich, K. and Schaefer, B.-J.}, year={2010}, pages={034029} }
@article{pavlenko_koverda_skokov_reshetnikov_vinogradov_surtaev_2009, title={Dynamics of transition processes and structure formation in critical heat-mass transfer regimes during liquid boiling and cavitation}, volume={18}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-66749094714&partnerID=MN8TOARS}, DOI={10.1134/S1810232809010044}, number={1}, journal={Journal of Engineering Thermophysics}, author={Pavlenko, A.N. and Koverda, V.P. and Skokov, V.N. and Reshetnikov, A.V. and Vinogradov, A.V. and Surtaev, A.S.}, year={2009}, pages={20–38} }
@article{filinov_bonitz_ivanov_skokov_levashov_fortov_2009, title={Equation of state of strongly coupled quark-gluon plasma - Path integral monte carlo results}, volume={49}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-70449337502&partnerID=MN8TOARS}, DOI={10.1002/ctpp.200910053}, abstractNote={A strongly coupled plasma of quark and gluon quasiparticles at temperatures from $ 1.1 T_c$ to $3 T_c$ is studied by path integral Monte Carlo simulations. This method extends previous classical nonrelativistic simulations based on a color Coulomb interaction to the quantum regime. We present the equation of state and find good agreement with lattice results. Further, pair distribution functions and color correlation functions are computed indicating strong correlations and liquid-like behavior.}, number={7}, journal={Contributions to Plasma Physics}, author={Filinov, V.S. and Bonitz, M. and Ivanov, Y.B. and Skokov, V.V. and Levashov, P.R. and Fortov, V.E.}, year={2009}, pages={536–543} }
@article{skokov_illarionov_toneev_2009, title={Estimate of the magnetic field strength in heavy-ion collisions}, volume={24}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-73949118426&partnerID=MN8TOARS}, DOI={10.1142/S0217751X09047570}, abstractNote={Magnetic fields created in the noncentral heavy-ion collision are studied within a microscopic transport model, namely the Ultrarelativistic Quantum Molecular Dynamics model (UrQMD). Simulations were carried out for different impact parameters within the SPS energy range ($E_{lab} = 10 - 158 A$ GeV) and for highest energies accessible for RHIC. We show that the magnetic field emerging in heavy-ion collisions has the magnitude of the order of $eB_y \sim 10^{-1} m_\pi^2$ for the SPS energy range and $eB_y \sim m_\pi^2$ for the RHIC energies. The estimated value of the magnetic field strength for the LHC energy amounts to $eB_y \sim 15 m_\pi^2$.}, number={31}, journal={International Journal of Modern Physics A}, author={Skokov, V. and Illarionov, A.Yu. and Toneev, V.}, year={2009}, pages={5925–5932} }
@inproceedings{skokov_levai_2009, title={Heavy quark production in strong non-Abelian field}, volume={EPS-HEP2009}, url={http://inspirehep.net/record/863928}, DOI={10.22323/1.084.0456}, booktitle={PoS}, author={Skokov, Vladimir and Levai, Peter}, year={2009}, pages={456} }
@article{skokov_voskresensky_2009, title={Hydrodynamical description of a hadron-quark first-order phase transition}, volume={90}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-76349122913&partnerID=MN8TOARS}, DOI={10.1134/S0021364009160012}, abstractNote={Solutions of hydrodynamical equations are presented for the equation of state of the Van der Waals type allowing for a first-order phase transition. As an example we consider the hadron-quark phase transition in heavy-ion collisions. It is shown that fluctuations dissolve and grow as if the fluid is effectively very viscous. In the vicinity of the critical point even in spinodal region seeds are growing slowly due to viscosity, surface tension and critical slowing down. These non-equilibrium effects prevent enhancement of fluctuations in the near-critical region, which in thermodynamical approach is frequently considered as a signal of the critical endpoint in heavy-ion collisions.}, number={4}, journal={JETP Letters}, author={Skokov, V.V. and Voskresensky, D.N.}, year={2009}, pages={223–227} }
@article{skokov_voskresensky_2009, title={Hydrodynamical description of first-order phase transitions: Analytical treatment and numerical modeling}, volume={828}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-68749086110&partnerID=MN8TOARS}, DOI={10.1016/j.nuclphysa.2009.07.012}, abstractNote={Solutions of hydrodynamical equations are presented for an equation of state allowing for a first-order phase transition. The numerical analysis is supplemented by analytical treatment provided the system is close to the critical point. The processes of growth and dissolution of seeds of various sizes and shapes in meta-stable phases (like super-cooled vapor and super-heated liquid) are studied, as well as the dynamics of unstable modes in the spinodal region. We show that initially nonspherical seeds acquire spherical shape with passage of time. Applications to the description of the first-order phase transitions in nuclear systems, such as the nuclear gas–liquid transition occurring in low energy heavy-ion collisions and the hadron–quark transition in the high energy heavy-ion collisions are discussed. In both cases we point out the important role played by effects of viscosity and surface tension. It is shown that fluctuations dissolve and grow as if the fluid were effectively very viscous. Even in the spinodal region seeds may grow slowly due to viscosity and critical slowing down. This prevents the enhancement of fluctuations in the near-critical region, which is frequently considered as a signal of the critical point in heavy-ion collisions.}, number={3-4}, journal={Nuclear Physics A}, author={Skokov, V.V. and Voskresensky, D.N.}, year={2009}, pages={401–438} }
@article{koverda_skokov_2009, title={Low-frequency fluctuations in stochastic processes with a 1/f ^{α} spectrum}, volume={54}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-67650505579&partnerID=MN8TOARS}, DOI={10.1134/S1063784209060024}, number={6}, journal={Technical Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2009}, pages={770–774} }
@article{koverda_skokov_2009, title={Statistics of avalanches in stochastic processes with a 1 / f^{α} spectrum}, volume={388}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-60349090289&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2009.01.014}, abstractNote={Abstract The results of numerical investigation of the Brownian motion in a two-dimensional potential field formed under the coupling of phase transitions at the conditions of the criticality induced by white noise are presented. The suggested system of stochastic equations at the white noise intensity that corresponds to the criticality of a noise-induced transition describes stationary random processes with power spectra S ( f ) ∼ f − α , where the exponent α varies in the range 0.8 ≤ α ≤ 1.8 . The exponent α was found by the direct FFT method from numerical realizations of the Brownian motion processes. The exponent β of the distribution function P ( τ ) ∼ τ − β of the duration of low frequency extreme fluctuations was determined by numerical methods from the distributions of time of the first passage across a potential barrier with different realizations of white noise. The low frequency extreme fluctuations in many properties are similar to avalanches considered in models of self-organized criticality. The exponents α and β were determined directly from numerical realizations of random processes independently of each other. It is shown that the exponents α and β are related by the relation α + β = 2 .}, number={9}, journal={Physica A: Statistical Mechanics and its Applications}, author={Koverda, V.P. and Skokov, V.N.}, year={2009}, pages={1804–1812} }
@article{koverda_skokov_2009, title={Statistics of fluctuations for nonequilibrium phase transitions in spatially distributed system with a 1/f spectrum}, volume={54}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-70350220620&partnerID=MN8TOARS}, DOI={10.1134/S1028335809100048}, number={10}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2009}, pages={454–458} }
@article{levai_skokov_2009, title={Strange and charm quark-pair production in a strong non-Abelian field}, volume={36}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-66749192089&partnerID=MN8TOARS}, DOI={10.1088/0954-3899/36/6/064068}, abstractNote={We have investigated strange and charm quark-pair production in the early stage of heavy ion collisions. Our kinetic model is based on a Wigner function method for fermion-pair production in strong non-Abelian fields. To describe the overlap of two colliding heavy ions we have applied the time-dependent color field with a pulse-like shape. The calculations have been performed in an SU(2)-color model with finite current quark masses. For strange quark-pair production the obtained results are close to the Schwinger limit, as we expected. For charm quark the large inverse temporal width of the field pulse, instead of the large charm quark mass, determines the efficiency of the quark-pair production. Thus we do not observe the expected suppression of charm quark-pair production connecting to the usual Schwinger-formalism, but our calculation results in a relatively large charm quark yield. This effect appears in Abelian models as well, demonstrating that particle-pair production for fast varying non-Abelian gluon field strongly deviates from the Schwinger limit for charm quark. We display our results on number densities for light, strange, charm quark-pairs, and different suppression factors as the function of characteristic time of acting chromo-electric field.}, number={6}, journal={Journal of Physics G: Nuclear and Particle Physics}, author={Levai, Peter and Skokov, Vladimir}, editor={Liu, Feng and Xiao, Zhigang and Zhuang, PengfeiEditors}, year={2009}, pages={064068} }
@inproceedings{skokov_ignatova_malyshev_raevsky_podurets_tupanova_zocher_2009, title={Temporal softening and its effect upon spall strength}, volume={1195}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-74949134849&partnerID=MN8TOARS}, DOI={10.1063/1.3295306}, abstractNote={Metals subjected to compressive shock of sufficient intensity often undergo microstructural changes involving deformation localization and temporal softening. Temporal softening has a significant effect on the formation of damage (the material is much more susceptible to damage during the period of temporal softening). The present on polycrystalline M1 copper clearly exhibits this phenomenon.}, booktitle={AIP Conference Proceedings}, author={Skokov, V.I. and Ignatova, O.N. and Malyshev, A.N. and Raevsky, V.A. and Podurets, A.M. and Tupanova, O.A. and Zocher, M.A.}, year={2009}, pages={965–968} }
@inproceedings{toneev_skokov_2008, title={Hydrodynamic view in the NICA energy range}, url={http://inspirehep.net/record/796594}, booktitle={13th International Conference on Selected Problems of Modern Theoretical Physics (SPMTP 08): Dedicated to the 100th Anniversary of the Birth of D.I. Blokhintsev (1908-1979)}, author={Toneev, V. and Skokov, V.}, year={2008}, month={Sep} }
@article{blaschke_skokov_wambach_2008, title={Physics of Particles and Nuclei: Preface}, volume={39}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-56749173935&partnerID=MN8TOARS}, DOI={10.1134/S1063779608070010}, number={7}, journal={Physics of Particles and Nuclei}, author={Blaschke, D. and Skokov, V. and Wambach, J.}, year={2008} }
@article{koverda_skokov_2008, title={Statistics of low-frequency fluctuations in stochastic processes with the 1/f ^{α} spectrum}, volume={53}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-46649105474&partnerID=MN8TOARS}, DOI={10.1134/S1028335808060049}, number={6}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2008}, pages={301–304} }
@article{skokov_levai_2008, title={Transverse and longitudinal momentum spectra of fermions produced in strong SU(2) fields}, volume={78}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-51849107398&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.78.054004}, abstractNote={We study the transverse and longitudinal momentum spectra of fermions produced in a strong, time-dependent non-Abelian SU(2) field. Different time-dependent field strengths are introduced. The momentum spectra are calculated for the produced fermion pairs in a kinetic model. The obtained spectra are similar to the Abelian case, and they display exponential or polynomial behavior at high ${p}_{T}$, depending on the given time dependence. We investigated different color initial conditions and discuss the recognized scaling properties for both Abelian and SU(2) cases.}, number={5}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Skokov, Vladimir V. and Levai, Peter}, year={2008}, pages={054004} }
@article{vinogradov_reshetnikov_skokov_koverda_2007, title={1/f fluctuations in boiling crisis}, volume={38}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-34548542866&partnerID=MN8TOARS}, DOI={10.1615/HeatTransRes.v38.i5.20}, abstractNote={The dynamics of fluctuations in transition from nucleate to film boiling of water on a wire heater, in transition of droplets of water, pentane, and hexane to a spheroidal state on a hot surface, as well as at the discharge of superheated liquid jets from a highpressure vessel has been studied experimentally. It has been found that for a heat-transfer crisis during the change of boiling regimes and for intense pool boiling-up of the superheated liquid jet, the power spectrum of fluctuations has a lowfrequency component (flicker noise) that diverges under the 1/f law. This effect is attributed to non-equilibrium phase transitions in the system: the heattransfer crisis during transition from nucleate to film boiling and the flow crisis at the boiling-up of the superheated liquid jet.}, number={5}, journal={Heat Transfer Research}, author={Vinogradov, A.V. and Reshetnikov, A.V. and Skokov, V.N. and Koverda, V.P.}, year={2007}, pages={399–406} }
@article{reshetnikov_sannikov_skokov_koverda_2007, title={Arc current fluctuation power spectra in the system of a solid metal electrode and carbonate melt}, volume={48}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33845923821&partnerID=MN8TOARS}, DOI={10.1007/s10808-007-0002-2}, number={1}, journal={Journal of Applied Mechanics and Technical Physics}, author={Reshetnikov, A.V. and Sannikov, V.I. and Skokov, V.N. and Koverda, V.P.}, year={2007}, pages={7–10} }
@article{reshetnikov_vinogradov_begletsov_skokov_koverda_2007, title={Boiling up of jets of superheated ethanol-water solutions}, volume={16}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-37249060654&partnerID=MN8TOARS}, DOI={10.1134/S1810232807040054}, number={4}, journal={Journal of Engineering Thermophysics}, author={Reshetnikov, A.V. and Vinogradov, A.V. and Begletsov, V.N. and Skokov, V.N. and Koverda, V.P.}, year={2007}, pages={244–248} }
@article{skokov_reshetnikov_vinogradov_koverda_2007, title={Fluctuation dynamics and 1/f spectra characterizing the acoustic cavitation of liquids}, volume={53}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33947609811&partnerID=MN8TOARS}, DOI={10.1134/S1063771007020042}, number={2}, journal={Acoustical Physics}, author={Skokov, V.N. and Reshetnikov, A.V. and Vinogradov, A.V. and Koverda, V.P.}, year={2007}, pages={136–140} }
@article{skokov_toneev_2007, title={Hydrodynamics of an expanding fireball}, volume={70}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33846873264&partnerID=MN8TOARS}, DOI={10.1134/S1063778807010115}, abstractNote={A set of relativistic hydrodynamic equations is solved numerically on the basis of the flux-corrected SHASTA method for one-, two-, and three-dimensional geometries. The accuracy of the proposed method is demonstrated via a comparison with exact analytic solutions for the one-dimensional Riemann problem and a boost-invariant longitudinal expansion in the Bjorken model. The example of an expanding three-dimensional fireball for which initial conditions approximately correspond to PbPb collisions at an energy of about 160 GeV per nucleon is considered. This example indicates that the presumed dynamics of the expansion may affect substantially the results of an analysis of in-medium properties of hadrons that relies on data from experiments with leptons.}, number={1}, journal={Physics of Atomic Nuclei}, author={Skokov, V.V. and Toneev, V.D.}, year={2007}, pages={109–117} }
@inproceedings{timokhin_skokov_sergeev_krylov_kuteev_2007, title={Injector of lithium jet for T-10 wall conditioning}, volume={31}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84873811602&partnerID=MN8TOARS}, number={2}, booktitle={34th EPS Conference on Plasma Physics 2007, EPS 2007 - Europhysics Conference Abstracts}, author={Timokhin, V.M. and Skokov, V.G. and Sergeev, V.Yu. and Krylov, S.V. and Kuteev, B.V.}, year={2007}, pages={816–819} }
@article{koverda_skokov_2007, title={Low-frequency high-energy pulsations in the processes of heat and mass transfer}, volume={38}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-38049181074&partnerID=MN8TOARS}, DOI={10.1615/HeatTransRes.v38.i8.50}, abstractNote={Studies of the dynamics of heat and mass transfer fluctuations demonstrate that high-energy pulsations with a fluctuation power spectrum inversely proportional to frequency (flicker or 1/f fluctuations) are observed in crisis and transition regimes. Such a spectrum implies energy transfer from high-frequency to low-frequency modes and a possibility of large-scale catastrophic swings in the system. The theory shows that such fluctuations arise in the system due to simultaneous occurrence of interacting phase transitions in the presence of white noise of sufficient intensity. The distribution function of fluctuations in scaling transformations of the system of stochastic equations that describes generation of 1/f noise has been studied. It is demonstrated that in scaling transformation the Gaussian distribution of a random process with the 1/f spectrum changes to an exponential distribution, characteristic of the statistics of extremum swings. The probability of such swings should be taken into account in predicting the stability of various heat transfer regimes.}, number={8}, journal={Heat Transfer Research}, author={Koverda, V.P. and Skokov, V.N.}, year={2007}, pages={721–730} }
@article{reshetnikov_mazheiko_skokov_koverda_2007, title={Nonequilibrium phase transitions in a jet of highly superheated water}, volume={45}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-37249010667&partnerID=MN8TOARS}, DOI={10.1134/S0018151X07060065}, number={6}, journal={High Temperature}, author={Reshetnikov, A.V. and Mazheiko, N.A. and Skokov, V.N. and Koverda, V.P.}, year={2007}, pages={763–770} }
@article{skokov_koverda_reshetnikov_vinogradov_2007, title={Power spectrum of fluctuation for ultrasonic cavitation process in glycerin}, volume={14}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-34548605092&partnerID=MN8TOARS}, DOI={10.1134/S0869864307010064}, number={1}, journal={Thermophysics and Aeromechanics}, author={Skokov, V.N. and Koverda, V.P. and Reshetnikov, A.V. and Vinogradov, A.V.}, year={2007}, pages={47–51} }
@article{reshetnikov_mazheiko_begletsov_skokov_koverda_2007, title={Pulsation dynamics during explosive boil-up of overheated water jets}, volume={33}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-35148855415&partnerID=MN8TOARS}, DOI={10.1134/S1063785007090052}, number={9}, journal={Technical Physics Letters}, author={Reshetnikov, A.V. and Mazheiko, N.A. and Begletsov, V.N. and Skokov, V.N. and Koverda, V.P.}, year={2007}, pages={732–734} }
@article{koverda_skokov_2007, title={Relaxation in establishing a steady-state stochastic process with 1/f spectrum and low-frequency spike statistics}, volume={52}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-36349002866&partnerID=MN8TOARS}, DOI={10.1134/S1063784207110011}, number={11}, journal={Technical Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2007}, pages={1391–1396} }
@article{koverda_skokov_2007, title={Statistics of extreme low-frequency fluctuations in a stationary stochastic process exhibiting the 1/f spectrum}, volume={52}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-34547698825&partnerID=MN8TOARS}, DOI={10.1134/S1028335807070026}, number={7}, journal={Doklady Physics}, author={Koverda, V.P. and Skokov, V.N.}, year={2007}, pages={354–358} }
@article{koverda_skokov_reshetnikov_2007, title={Statistics of low-frequency pulsations in critical regimes of heat mass exchange with phase transitions}, volume={16}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-34548693228&partnerID=MN8TOARS}, DOI={10.1134/S1810232807030046}, number={3}, journal={Journal of Engineering Thermophysics}, author={Koverda, V.P. and Skokov, V.N. and Reshetnikov, A.V.}, year={2007}, pages={130–138} }
@inproceedings{skokov_ignatova_malyshev_podurets_raevsky_zocher_2007, title={Temporal softening and its effect upon strength}, volume={955}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-71849111371&partnerID=MN8TOARS}, DOI={10.1063/1.2833160}, abstractNote={Temporal softening that is associated with the passage of a shock wave is investigated along with its effect upon material strength and issues of macroscopic scaling. Specimens are loaded in such a way that a moderate tensile pulse is applied during the temporal window of softening. It is found that strength is reduced as a consequence of temporal softening. It appears that temporal softening contributes to a reversal of typically observed macroscopic scaling effects.}, booktitle={AIP Conference Proceedings}, author={Skokov, V.I. and Ignatova, O.N. and Malyshev, A.N. and Podurets, A.M. and Raevsky, V.A. and Zocher, M.A.}, year={2007}, pages={597–600} }
@article{gogokhia_skokov_2007, title={The Non-perturbative equation of state for gluon matter}, volume={12}, url={http://inspirehep.net/record/769231}, author={Gogokhia, V. and Skokov, V.V.}, year={2007}, month={Dec} }
@article{skokov_koverda_reshetnikov_vinogradov_2006, title={1/f fluctuations under acoustic cavitation of liquids}, volume={364}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33645164985&partnerID=MN8TOARS}, DOI={10.1016/j.physa.2005.09.045}, abstractNote={Abstract A regime of a generation of fluctuations with 1 / f power spectra under cavitation of liquids in an ultrasonic field has been found experimentally. The acoustic cavitation is accompanied by the formation of various spatial structures and scale-invariant distribution functions of fluctuations. It has been shown that local fluctuations can have non-Gaussian distribution. A two-dimensional distributed parameter system of stochastic equations describing interacting nonequilibrium phase transitions has been investigated numerically. It has been shown that the system in a wide range of changing initial conditions and the intensity of external noise is characterized by the 1 / f behavior of power spectra and scale-invariant distribution functions of fluctuations. The results of numerical simulation agree qualitatively with the experimental data.}, journal={Physica A: Statistical Mechanics and its Applications}, author={Skokov, V.N. and Koverda, V.P. and Reshetnikov, A.V. and Vinogradov, A.V.}, year={2006}, pages={63–69} }
@article{skokov_toneev_2006, title={Dilepton production from hydrodynamically expanding fireball}, volume={56}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-71249098602&partnerID=MN8TOARS}, number={4}, journal={Acta Physica Slovaca}, author={Skokov, V.V. and Toneev, V.D.}, year={2006}, pages={503–509} }
@inproceedings{skokov_toneev_2006, title={Dilepton production from hydrodynamically expanding fireball}, volume={56}, url={http://inspirehep.net/record/708909}, number={4}, booktitle={Acta Phys.Slov.}, author={Skokov, V.V. and Toneev, V.D.}, year={2006}, pages={503–510} }
@article{sergeev_skokov_timokhin_kuteev_martynenko_burhenn_2006, title={Dust mode of carbon pellet ablation in the W7-AS stellarator}, volume={51}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33750984195&partnerID=MN8TOARS}, DOI={10.1134/S1063784206110119}, number={11}, journal={Technical Physics}, author={Sergeev, V.Yu. and Skokov, V.G. and Timokhin, V.M. and Kuteev, B.V. and Martynenko, V.Yu. and Burhenn, R.}, year={2006}, pages={1462–1467} }
@inproceedings{vershkov_shelukhin_krylov_novikov_pavlov_timokhin_skokov_2006, title={Investigation of different plasma components confinement and turbulence characteristics in T-10 tokamak}, volume={2}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84872648820&partnerID=MN8TOARS}, booktitle={33rd EPS Conference on Plasma Physics 2006, EPS 2006}, author={Vershkov, V.A. and Shelukhin, D.A. and Krylov, S.V. and Novikov, A.Yu. and Pavlov, Yu.D. and Timokhin, V.M. and Skokov, V.A.}, year={2006}, pages={1472–1475} }
@inproceedings{pervushin_skokov_2006, title={Kinetic description of fermion production in the oscillator representation}, volume={37}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33748761671&partnerID=MN8TOARS}, number={9}, booktitle={Acta Physica Polonica B}, author={Pervushin, V.N. and Skokov, V.V.}, year={2006}, pages={2587–2600} }
@article{pervushin_skokov_2006, title={Kinetic description of fermion production in the oscillator representation}, volume={37}, url={http://inspirehep.net/record/732673}, journal={Acta Phys.Polon.B}, author={Pervushin, V.N. and Skokov, Vladimir V.}, year={2006}, pages={2587–2600} }
@article{khvorostukin_skokov_toneev_redlich_2006, title={Lattice QCD constraints on the nuclear equation of state}, volume={48}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33845225323&partnerID=MN8TOARS}, DOI={10.1140/epjc/s10052-006-0052-2}, abstractNote={Based on the quasi-particle description of the QCD medium at finite temperature and density we formulate the phenomenological model for the equation of state that exhibits crossover or the first order deconfinement phase transition. The models are constructed in such a way to be thermodynamically consistent and to satisfy the properties of the ground state nuclear matter comply with constraints from intermediate heavy--ion collision data. Our equations of states show quite reasonable agreement with the recent lattice findings on temperature and baryon chemical potential dependence of relevant thermodynamical quantities in the parameter range covering both the hadronic and quark--gluon sectors. The model predictions on the isentropic trajectories in the phase diagram are shown to be consistent with the recent lattice results. Our nuclear equations of states are to be considered as an input to the dynamical models describing the production and the time evolution of a thermalized medium created in heavy ion collisions in a broad energy range from SIS up to LHC.}, number={2}, journal={European Physical Journal C}, author={Khvorostukin, A.S. and Skokov, V.V. and Toneev, V.D. and Redlich, K.}, year={2006}, pages={531–543} }
@article{skokov_toneev_2006, title={Semi-central in-in collisions and Brown-Rho scaling}, volume={73}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33644639467&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.73.021902}, abstractNote={In connection with the claim made at the Quark Matter 2005 Conference that the Brown-Rho scaling is ruled out by NA60 data we consider dimuon production from semi-central In+In collisions in a full dynamical model. It is shown that if only a modification of the density-dependent $\rho$-mass is allowed, the maximum of dimuon invariant mass spectra is only slightly below experimental one. The additional inclusion of the temperature-dependent modification factor shifts the spectrum maximum toward lower invariant masses making calculation results incompatible with data. A further study is needed to disentangle the BR dropping $\rho$ mass scaling and strong broadening.}, number={2}, journal={Physical Review C - Nuclear Physics}, author={Skokov, V.V. and Toneev, V.D.}, year={2006}, pages={021902} }
@inproceedings{timokhin_skokov_sergeev_krylov_kuteev_2006, title={T-10 discharge control by method of lithium pellet-injection and by injection of superdense supersonic gas jets}, volume={2}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84872660883&partnerID=MN8TOARS}, booktitle={33rd EPS Conference on Plasma Physics 2006, EPS 2006}, author={Timokhin, V.M. and Skokov, V.G. and Sergeev, V.Yu. and Krylov, S.V. and Kuteev, B.V.}, year={2006}, pages={1500–1503} }
@inproceedings{skokov_timokhin_sergeev_khimchenko_krylov_kuteev_pavlov_ponomarev_pustovitov_sarychev_2006, title={Threshold effects in pellet-plasma interaction in T-10 tokamak}, volume={2}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84872652218&partnerID=MN8TOARS}, booktitle={33rd EPS Conference on Plasma Physics 2006, EPS 2006}, author={Skokov, V.G. and Timokhin, V.M. and Sergeev, V.Yu. and Khimchenko, L.N. and Krylov, S.V. and Kuteev, B.V. and Pavlov, Yu.D. and Ponomarev, A.V. and Pustovitov, V.D. and Sarychev, D.V.}, year={2006}, pages={1488–1491} }
@article{kuteev_skokov_sergeev_timokhin_krylov_pavlov_ponomarev_pustovitov_sarychev_khimchenko_2006, title={Threshold effects in the interaction of a plasma with injected pellets in the T-10 tokamak}, volume={84}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33750899502&partnerID=MN8TOARS}, DOI={10.1134/S0021364006170024}, number={5}, journal={JETP Letters}, author={Kuteev, B.V. and Skokov, V.G. and Sergeev, V.Yu. and Timokhin, V.M. and Krylov, S.V. and Pavlov, Yu.D. and Ponomarev, A.V. and Pustovitov, V.D. and Sarychev, D.V. and Khimchenko, L.N.}, year={2006}, pages={239–242} }
@article{ivanov_skokov_toneev_2005, title={Equation of state of deconfined matter within a dynamical quasiparticle description}, volume={71}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84927745417&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.71.014005}, abstractNote={A simple quasiparticle model, motivated by lowest-order perturbative QCD, is proposed. It is applied to interpret the lattice QCD equation of state. A reasonable reproduction of the lattice data is obtained. In contrast to existing quasiparticle models, the present model is formulated in dynamical rather than thermodynamical terms, and is easily applicable to a system with finite baryon density. In particular, the model simulates the confinement property.}, number={1}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Ivanov, Yu.B. and Skokov, V.V. and Toneev, V.D.}, year={2005}, pages={014005} }
@inproceedings{timokhin_skokov_sergeev_krylov_kuteev_2005, title={Fast electron studies in T-10 plasmas by means of carbon pellet injection}, volume={1}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84873340926&partnerID=MN8TOARS}, booktitle={32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts}, author={Timokhin, V.M. and Skokov, V.G. and Sergeev, V.Yu. and Krylov, S.V. and Kuteev, B.V.}, year={2005}, pages={638–641} }
@inproceedings{smolyansky_skokov_prozorkevich_2005, title={Kinetic theory of the quantum field systems with unstable vacuum}, volume={2}, url={http://inspirehep.net/record/630122}, booktitle={Phys.Part.Nucl.Lett.}, author={Smolyansky, S.A. and Skokov, V.V. and Prozorkevich, A.V.}, editor={Barbashov, B. M. and Efimov, G. V. and Efremov, A. V. and Eliseev, S. M. and Nesterenko, V. V. and Volkov, M. K.Editors}, year={2005}, pages={293–299} }
@article{ivanov_khvorostukhin_kolomeitsev_skokov_toneev_voskresensky_2005, title={Lattice QCD constraints on hybrid and quark stars}, volume={72}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-26944498675&partnerID=MN8TOARS}, DOI={10.1103/PhysRevC.72.025804}, abstractNote={A QCD-motivated dynamical-quasiparticle model with parameters adjusted to reproduce the lattice-QCD equation of state is extrapolated from the region of high temperatures and moderate baryonic densities to the domain of high baryonic densities and zero temperature. The resulting equation of state matched with realistic hadronic equations of state predicts a phase transition into the quark phase at higher densities than those reachable in neutron star interiors. This excludes the possibility of the existence of hybrid (hadron-quark) stars. Pure quark stars are possible and have low masses, small radii, and very high central densities. Similar results are obtained for a simple bag model with massive quarks, fitted to reproduce the same lattice results. Self-bound quark matter is also excluded within these models. Uncertainties in the present extrapolation are discussed. Comparison with standard bag models is made.}, number={2}, journal={Physical Review C - Nuclear Physics}, author={Ivanov, Yu.B. and Khvorostukhin, A.S. and Kolomeitsev, E.E. and Skokov, V.V. and Toneev, V.D. and Voskresensky, Dmitri N.}, year={2005}, pages={025804} }
@inproceedings{kuteev_khimchenko_krylov_pavlov_poznyak_pustovitov_sarychev_sushkov_sergeev_skokov_et al._2005, title={Study of MHD events initiated by pellet injection into T-10 plasmas}, volume={1}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-84873387172&partnerID=MN8TOARS}, booktitle={32nd EPS Conference on Plasma Physics 2005, EPS 2005, Held with the 8th International Workshop on Fast Ignition of Fusion Targets - Europhysics Conference Abstracts}, author={Kuteev, B. and Khimchenko, L. and Krylov, S. and Pavlov, Yu. and Poznyak, V. and Pustovitov, V. and Sarychev, D. and Sushkov, A. and Sergeev, V. and Skokov, V. and et al.}, year={2005}, pages={5–8} }
@article{pervushin_skokov_reichel_smolyansky_prozorkevich_2005, title={The kinetic description of vacuum particle creation in the oscillator representation}, volume={20}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-26044476623&partnerID=MN8TOARS}, DOI={10.1142/S0217751X05028909}, abstractNote={The oscillator representation is used for the non-perturbative description of vacuum particle creation in a strong time-dependent electric field in the framework of scalar QED. It is shown that the method can be more effective for the derivation of the quantum kinetic equation (KE) in comparison with the Bogoliubov method of time-dependent canonical transformations. This KE is used for the investigation of vacuum creation in periodical linear and circular polarized electric fields and also in the case of the presence of a constant magnetic field, including the back reaction problem. In particular, these examples are applied for a model illustration of some features of vacuum creation of electron-positron plasma within the planned experiments on the X-ray free electron lasers.}, number={24}, journal={International Journal of Modern Physics A}, author={Pervushin, V.N. and Skokov, V.V. and Reichel, A.V. and Smolyansky, S.A. and Prozorkevich, A.V.}, year={2005}, pages={5689–5704} }
@article{skokov_levai_2005, title={Transverse momentum spectra of fermions and bosons produced in strong Abelian fields}, volume={71}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-33749158787&partnerID=MN8TOARS}, DOI={10.1103/PhysRevD.71.094010}, abstractNote={We study the transverse momentum spectra of fermions and bosons produced in a strong, time-dependent Abelian field. The transverse size of the Abelian field is finite, similarly to color strings and ropes. Different time-dependent field strengths are investigated in a kinetic model, and transverse momentum spectra are calculated for fermions and bosons. These spectra display exponential or polynomial behavior at high ${p}_{T}$, depending on the given time dependence. We compare our spectra to the lattice result for a classical gluon field and obtain surprisingly good agreement in certain cases.}, number={9}, journal={Physical Review D - Particles, Fields, Gravitation and Cosmology}, author={Skokov, Vladimir V. and Levai, Peter}, year={2005}, pages={1–6} }
@article{prozorkevich_smolyansky_skokov_zabrodin_2004, title={Vacuum creation of quarks at the time scale of QGP thermalization and strangeness enhancement in heavy-ion collisions}, volume={583}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-1242316350&partnerID=MN8TOARS}, DOI={10.1016/j.physletb.2003.12.052}, abstractNote={The vacuum parton creation in quickly varying external fields is studied at the time scale of order 1 fm/$c$ typical for the quark-gluon plasma formation and thermalization. To describe the pre-equilibrium evolution of the system the transport kinetic equation is employed. It is shown that the dynamics of production process at times comparable with particle inverse masses can deviate considerably from that based on classical Schwinger-like estimates for homogeneous and constant fields. One of the effects caused by non-stationary chromoelectric fields is the enhancement of the yield of $s\bar{s}$ quark pairs. Dependence of this effect on the shape and duration of the field pulse is studied together with the influence of string fusion and reduction of quark masses.}, number={1-2}, journal={Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}, author={Prozorkevich, A.V. and Smolyansky, S.A. and Skokov, V.V. and Zabrodin, E.E.}, year={2004}, pages={103–110} }
@article{vinnik_alkofer_schmidt_smolyansky_skokov_prozorkevitch_2002, title={Coupled fermion and boson production in a strong background mean field}, volume={32}, url={http://www.scopus.com/inward/record.url?eid=2-s2.0-0036614309&partnerID=MN8TOARS}, DOI={10.1007/s00601-002-0110-8}, abstractNote={We derive quantum kinetic equations for fermion and boson production starting from a φ4 Lagrangean with minimal coupling to fermions. Decomposing the scalar field into a mean-field part and fluctuations we obtain spontaneous pair creation driven by a self-interacting strong background field. The produced fermion and boson pairs are self-consistently coupled. Consequently back reactions arise from fermion and boson currents determining the time-dependent self-interacting background mean field. We explore the numerical solution with cylindric boundary conditions for the time evolution of the mean field as well as for the number- and energy densities for fermions and bosons. We find that after a characteristic time all energy is converted from the background mean field to particle creation. Applying this general approach to the production of “quarks” and “gluons” a typical time scale for the collapse of the flux tube is 1.5 fm/c.}, number={1-2}, journal={Few-Body Systems}, author={Vinnik, D.V. and Alkofer, Reinhard and Schmidt, S.M. and Smolyansky, S.A. and Skokov, V.V. and Prozorkevitch, A.V.}, year={2002}, pages={23–39} }
@inproceedings{skokov_smolyansky_toneev_2002, title={Quark gluon evolution in early stage of ultrarelativistic heavy ion collisions}, url={http://inspirehep.net/record/598973}, booktitle={16th International Baldin Seminar on High Energy Physics Problems}, author={Skokov, V.V. and Smolyansky, S.A. and Toneev, V.D.}, year={2002}, month={Oct} }
@article{skokov_toneev_vinnik_smolyansky_2002, title={Relaxation processes in relativistic plasma created from vacuum by a strong field}, volume={12}, url={http://inspirehep.net/record/606929}, author={Skokov, V.V. and Toneev, V.D. and Vinnik, D.V. and Smolyansky, S.A.}, year={2002}, month={Dec} }