Works (77)
Updated: April 8th, 2024 08:24
2023 journal article
Extended body dynamics in general relativity: Hyperelastic models
PHYSICAL REVIEW D, 108(8).
arxiv.org (repository)
Sources: ORCID, Web Of Science
Added: February 1, 2024
2023 journal article
Singular Lagrangians and the Dirac-Bergmann algorithm in classical mechanics
AMERICAN JOURNAL OF PHYSICS, 91(3), 214–224.
Sources: ORCID, Web Of Science
Added: February 27, 2023
2022 journal article
Generalized geodesic deviation in de Sitter spacetime
CLASSICAL AND QUANTUM GRAVITY, 39(11).
author keywords: general relativity; generalized geodesic deviation; de Sitter spacetime
Sources: ORCID, Web Of Science
Added: May 16, 2022
2022 journal article
Singular Lagrangians, Constrained Hamiltonian Systems and Gauge Invariance: An Example of the Dirac-Bergmann Algorithm
UNIVERSE, 8(3).
author keywords: gauge theories; general relativity; classical mechanics; Hamiltonian formalism
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Sources: ORCID, Web Of Science
Added: March 14, 2022
2021 journal article
Elasticity theory in general relativity
Classical and Quantum Gravity, 38(8), 085017.
author keywords: elastic bodies; Lagrangian; general relativity
UN Sustainable Development Goal Categories
3. Good Health and Well-being
(Web of Science)
Sources: Web Of Science, ORCID
Added: April 5, 2021
2017 journal article
Continuous body dynamics and the Mathisson-Papapetrou-Dixon equations
Phys.Rev.D, 95(4), 044025.
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Source: ORCID
Added: November 4, 2021
2012 journal article
Numerical simulations with a first order BSSN formulation of Einstein's field equations
Phys.Rev.D, 85, 084004.
Source: ORCID
Added: November 4, 2021
2011 journal article
Action Principle for the Generalized Harmonic Formulation of General Relativity
Phys.Rev.D, 84, 084014.
Source: ORCID
Added: November 4, 2021
2011 journal article
Generalized Harmonic Equations in 3+1 Form
Phys.Rev.D, 84, 124012.
Source: ORCID
Added: November 4, 2021
2011 journal article
Oppenheimer–Snyder collapse in moving-puncture coordinates
Classical and Quantum Gravity, 29(1), 015003.
Sources: ORCID, Crossref
Added: March 5, 2020
2010 journal article
Trumpet slices of the Schwarzschild-Tangherlini spacetime
Phys.Rev.D, 82, 124057.
Source: ORCID
Added: November 4, 2021
2009 journal article
Covariant formulations of BSSN and the standard gauge
Phys.Rev.D, 79, 104029.
TL;DR:
The Baumgarte-Shapiro-Shibata-Nakamura (BSSN) and standard gauge equations are written in covariant form with respect to spatial coordinate transformations to evolve a given set of initial data using two different coordinate systems and to relate the results using the familiar tensor transformation rules.
(via Semantic Scholar)
Source: ORCID
Added: November 4, 2021
2009 journal article
Probing the puncture for black hole simulations
PHYSICAL REVIEW D, 80(8).
Sources: ORCID, Web Of Science
Added: August 6, 2018
2009 conference paper
Strongly Hyperbolic Extensions of the ADM Hamiltonian
workshop on Quantum Mechanics of Fundamental Systems: the Quest for Beauty and Simplicity: Dedicated to Claudio Bunster on the occasion of his 60th birthday, 71–90.
Source: ORCID
Added: November 4, 2021
2009 journal article
Turduckening black holes: An analytical and computational study
PHYSICAL REVIEW D, 79(4).
Sources: Web Of Science, ORCID
Added: August 6, 2018
2008 journal article
BSSN in spherical symmetry
CLASSICAL AND QUANTUM GRAVITY, 25(20).
Sources: Web Of Science, ORCID
Added: August 6, 2018
2008 journal article
Puncture Evolution of Schwarzschild Black Holes
Phys.Rev.D, 77, 044018.
Source: ORCID
Added: November 4, 2021
2007 journal article
Excision without excision
PHYSICAL REVIEW D, 76(8).
Sources: Web Of Science, ORCID
Added: August 6, 2018
2006 journal article
Midpoint rule as a variational-symplectic integrator: Hamiltonian systems
PHYSICAL REVIEW D, 73(2).
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2006 journal article
Modifying the Einstein equations off the constraint hypersurface
PHYSICAL REVIEW D, 74(10).
Sources: Web Of Science, ORCID
Added: August 6, 2018
2005 journal article
Conformal invariance and the conformal-traceless decomposition of the gravitational field
PHYSICAL REVIEW D, 71(10).
Sources: Web Of Science, ORCID
Added: August 6, 2018
2005 journal article
Multigrid elliptic equation solver with adaptive mesh refinement
JOURNAL OF COMPUTATIONAL PHYSICS, 209(2), 582–598.
TL;DR:
This paper describes in detail the computational algorithm used by the authors' parallel multigrid elliptic equation solver with adaptive mesh refinement that uses truncation error estimates to adaptively refine the grid as part of the solution process.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2004 journal article
Distorted black hole initial data using the puncture method
PHYSICAL REVIEW D, 70(12).
TL;DR:
This work solves for single distorted black hole initial data using the puncture method, where the Hamiltonian constraint is written as an elliptic equation in R{sup 3} for the nonsingular part of the metric conformal factor.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2004 journal article
Evolving a puncture black hole with fixed mesh refinement
PHYSICAL REVIEW D, 70(12).
Sources: Web Of Science, ORCID
Added: August 6, 2018
2004 journal article
Interface conditions for wave propagation through mesh refinement boundaries
JOURNAL OF COMPUTATIONAL PHYSICS, 193(2), 398–425.
author keywords: partial differential equations; computational techniques; finite difference methods; mesh generation and refinement; numerical relativity; gravitational waves
TL;DR:
It is demonstrated that using linear interpolation to set the data in guard cells leads to the production of reflected waves at the refinement boundaries, and Implementing quadratic interpolations to fill the guard cells suppresses these spurious signals.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2002 journal article
Action and energy of the gravitational field
ANNALS OF PHYSICS, 297(2), 175–218.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
2001 journal article
Dynamical rotational instability at low T/W
ASTROPHYSICAL JOURNAL, 550(2), L193–L196.
author keywords: gravitation; hydrodynamics; instabilities; stars : neutron; stars : rotation
Sources: Web Of Science, ORCID
Added: August 6, 2018
2001 conference paper
Rotational instabilities in post collapse stellar cores
In J. M. Centrella (Ed.), Astrophysical sources for ground based gravitational wave detectors (Vol. 575, pp. 234–245).
Ed(s): J. Centrella
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
2000 journal article
Action and energy of the gravitational field
10. http://inspirehep.net/record/534655
Source: ORCID
Added: November 4, 2021
2000 journal article
Gravitational waves from the dynamical bar instability in a rapidly rotating star
PHYSICAL REVIEW D, 62(8).
Sources: Web Of Science, ORCID
Added: August 6, 2018
1999 journal article
Canonical quasilocal energy and small spheres
PHYSICAL REVIEW D, 59(6).
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1998 journal article
Boundary states and black hole entropy
PHYSICAL REVIEW D, 57(4), 2624–2627.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1998 conference paper
Commentary on Lanczos's 'Remark on the de Sitter universe'
Cornelius Lanczos collected published papers with commentaries, 2–41. Raleigh: College of Physical and Mathematical Sciences, North Carolina State University.
Source: NC State University Libraries
Added: August 6, 2018
1998 conference paper
Commentary on Lanczos's 'Surface distribution of matter in Einstein's theory of gravitation'
Cornelius Lanczos collected published papers with commentaries, 2/264–2265. Raleigh: College of Physical and Mathematical Sciences, North Carolina State University.
Source: NC State University Libraries
Added: August 6, 2018
1998 conference paper
path integral formulation of gravitational thermodynamics
In C. Teitelboim & J. Zanelli (Eds.), The black hole 25 years after (pp. 1–24).
Ed(s): . C. Teitelboim & J. Zanelli
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1997 journal article
Black holes with short hair
International Journal of Modern Physics. D, Gravitation, Astrophysics, Cosmology, 6(5), 563–573.
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1997 journal article
Duality invariance of black hole creation rates
PHYSICAL REVIEW D, 56(2), 1001–1004.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1997 journal article
Energy of isolated systems at retarded times as the null limit of quasilocal energy
PHYSICAL REVIEW D, 55(4), 1977–1984.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1996 journal article
On variational principles for gravitating perfect fluids
Annals of Physics, 248, 1–33.
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1996 journal article
Relativistic material reference systems
PHYSICAL REVIEW D, 53(4), 1835–1844.
TL;DR:
It is shown that perfect fluids are a special case of Dewitt’s relativistic elastic media and that the velocity-potential formalism for perfect fluids can be interpreted as describing a perfect fluid coupled to a fleet of clocks.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1995 journal article
BLACK-HOLE PAIR CREATION AND THE ENTROPY FACTOR
PHYSICAL REVIEW D, 51(10), 5725–5731.
TL;DR:
It is shown that in the instanton approximation the rate of creation of black holes is always enhanced by a factor of the exponential of the black hole entropy relative to the rateof creation of compact matter distributions (stars).
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1995 journal article
Black hole entropy and the Hamiltonian formulation of diffeomorphism invariant theories
PHYSICAL REVIEW D, 52(12), 7011–7026.
TL;DR:
An algorithm for placing the action of a diffeomorphism invariant theory in Hamiltonian form is presented, which depends on the variational derivative of the Lagrangian with respect to the Riemann tensor.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1995 journal article
DUST AS A STANDARD OF SPACE AND TIME IN CANONICAL QUANTUM-GRAVITY
PHYSICAL REVIEW D, 51(10), 5600–5629.
TL;DR:
The particles of dust introduce into space a privileged system of coordinates that allows the supermomentum constraint to be solved explicitly and yields a formally conserved inner product that can be written in terms of either the instantaneous state functionals or the solutions of constraints.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1994 conference paper
Black hole thermodynamics in a box
In M. T. C. J. D. Brown, D. C. Ellison, & R. J. Plemmons (Eds.), Proceedings of the Cornelius Lanczos International Centenary Conference (pp. 548–550). Philadelphia: SIAM.
Ed(s): M. J. D. Brown, . D. C. Ellison & R. Plemmons
Source: NC State University Libraries
Added: August 6, 2018
1994 journal article
Black hole thermodynamics in a box
4. http://inspirehep.net/record/372580
Source: ORCID
Added: November 4, 2021
1994 conference paper
Microcanonical action and the entropy of a rotating black hole
In M. Flato, R. Kerner, & A. Lichnerowicz (Eds.), Physics on manifolds: Proceedings of the international colloquium in honour of Yvonne Choquet-Bruhat, Paris, June 3-5, 1992 (Vol. 15, pp. 23–34).
Ed(s): M. Flato, R. Kerner & A. Lichnerowicz
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1994 journal article
On variational principles for gravitating perfect fluids
7. http://inspirehep.net/record/374738
Source: ORCID
Added: November 4, 2021
1994 book
Proceedings of the Cornelius Lanczos International Centenary Conference
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1994 conference paper
Reference fluids as standards of space and time
In M. T. C. J. D. Brown, D. C. Ellison, & R. J. Plemmons (Eds.), Proceedings of the Cornelius Lanczos International Centenary Conference (pp. 563–565). Philadelphia: SIAM.
Ed(s): M. J. D. Brown, . D. C. Ellison & R. Plemmons
Source: NC State University Libraries
Added: August 6, 2018
1994 journal article
Reference fluids as standards of space and time
4. http://inspirehep.net/record/372581
Source: ORCID
Added: November 4, 2021
1994 journal article
TEMPERATURE, ENERGY, AND HEAT-CAPACITY OF ASYMPTOTICALLY ANTI-DE SITTER BLACK-HOLES
PHYSICAL REVIEW D, 50(10), 6394–6403.
TL;DR:
The thermodynamic properties of black holes in (3+1)- and (2+1-dimensional Einstein gravity with a negative cosmological constant are investigated and it is shown that the chemical potential conjugate to angular momentum is equal to the proper angular velocity of the black hole with respect to observers who are at rest in the stationary time slices.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1994 conference paper
Temperature and time in the geometry of rotating black holes
In J. P.-M. J. J. Halliwell & W. Zurek (Eds.), Physical origins of time asymmetry (pp. 465–474). Cambridge: Cambridge University Press.
Ed(s): J. J. J. Halliwell & W. Zurek
Source: NC State University Libraries
Added: August 6, 2018
1994 conference paper
The Path integral formulation of gravitational thermodynamics
The Black Hole 25 Years After, 1–24. http://inspirehep.net/record/373302
Source: ORCID
Added: November 4, 2021
1993 journal article
ACTION FUNCTIONALS FOR RELATIVISTIC PERFECT FLUIDS
CLASSICAL AND QUANTUM GRAVITY, 10(8), 1579–1606.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1993 conference paper
Jacobi's action and the density of states
In B. L. Hu & T. A. Jacobson (Eds.), Directions in relativity: Proceedings of the 1993 symposium, Maryland (pp. 28–37).
Ed(s): . B. L. Hu & T. Jacobson
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1993 journal article
Jacobi's action and the density of states
2. http://inspirehep.net/record/34159
Source: ORCID
Added: November 4, 2021
1993 journal article
MICROCANONICAL FUNCTIONAL INTEGRAL FOR THE GRAVITATIONAL-FIELD
PHYSICAL REVIEW D, 47(4), 1420–1431.
TL;DR:
A general form of the first law of thermodynamics for stationary black holes is derived and the density of states is expressed as a real-time functional integral and then used to deduce Feynman's imaginary- time functional integral for the canonical partition function.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1993 journal article
QUASI-LOCAL ENERGY AND CONSERVED CHARGES DERIVED FROM THE GRAVITATIONAL ACTION
PHYSICAL REVIEW D, 47(4), 1407–1419.
TL;DR:
For spherically symmetric spacetimes, it is shown that the quasilocal energy has the correct Newtonian limit, and includes a negative contribution due to gravitational binding.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1992 conference paper
Quasilocal energy in general relativity
In J. E. M. M. J. Gotay & V. E. Moncrief (Eds.), Mathematical aspects of classical field theory (pp. 129–142).
Ed(s): J. M. J. Gotay & V. Moncrief
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1992 conference paper
Temperature and time in the geometry of rotating black holes
NATO Workshop on the Physical Origin of Time Asymmetry. http://inspirehep.net/record/332517
Source: ORCID
Added: November 4, 2021
1991 journal article
COMPLEX KERR-NEWMAN GEOMETRY AND BLACK-HOLE THERMODYNAMICS
PHYSICAL REVIEW LETTERS, 66(18), 2281–2284.
TL;DR:
It is established that in the functional-integral expression for the grand partition function, the thermodynamic properties of a charged, rotating black hole are derived from a complex geometry.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1991 conference paper
Quasilocal energy in general relativity
Joint Summer Reasearch Conference on Mathematical Aspects of Classical Field Theory. http://inspirehep.net/record/322580
Source: ORCID
Added: November 4, 2021
1991 conference paper
Rotating black holes, complex geometry, and thermodynamics
Annals of the New York Academy of Sciences, 631, 225–234.
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1990 journal article
CHARGED BLACK-HOLE IN A GRAND CANONICAL ENSEMBLE
PHYSICAL REVIEW D, 42(10), 3376–3385.
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1990 journal article
LORENTZIAN PATH INTEGRAL FOR MINISUPERSPACE COSMOLOGY
PHYSICAL REVIEW D, 42(6), 1931–1943.
TL;DR:
The path integral for minisuperspace models of cosmology is defined as a sum over Lorentzian geometries, and is a Green function for the Wheeler-DeWitt operator that is shown to be a symmetric function of the initial and final configurations.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1990 journal article
THERMODYNAMIC ENSEMBLES AND GRAVITATION
CLASSICAL AND QUANTUM GRAVITY, 7(8), 1433–1444.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1990 journal article
TUNNELING IN PERFECT-FLUID (MINISUPERSPACE) QUANTUM COSMOLOGY
PHYSICAL REVIEW D, 41(4), 1125–1141.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1989 journal article
JACOBI ACTION AND THE RECOVERY OF TIME IN GENERAL-RELATIVITY
PHYSICAL REVIEW D, 40(10), 3312–3318.
TL;DR:
It is argued that the usual action principle of general relativity, applied to spacetimes with closed spatial geometries, should be regarded as analogous to Jacobi's form of the principle of stationary action, in which the energy rather than a physical time is fixed.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1989 journal article
SCALAR FIELD WORMHOLES
NUCLEAR PHYSICS B, 328(1), 213–222.
TL;DR:
A classical wormhole solution is constructed for gravity couples to a positive energg, maplese scalar field, characterized by a scalarField configuration which is locally dual to the scalar Field.
(via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1988 book
Lower dimensional gravity
Sources: NC State University Libraries, ORCID
Added: August 6, 2018
1988 journal article
NEUTRALIZATION OF THE COSMOLOGICAL CONSTANT BY MEMBRANE CREATION
NUCLEAR PHYSICS B, 297(4), 787–836.
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018
1987 journal article
DYNAMIC NEUTRALIZATION OF THE COSMOLOGICAL CONSTANT
PHYSICS LETTERS B, 195(2), 177–182.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1986 journal article
BLACK-HOLES IN 2 SPACETIME DIMENSIONS
PHYSICAL REVIEW D, 33(2), 319–323.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1986 journal article
CENTRAL CHARGES IN THE CANONICAL REALIZATION OF ASYMPTOTIC SYMMETRIES - AN EXAMPLE FROM 3-DIMENSIONAL GRAVITY
COMMUNICATIONS IN MATHEMATICAL PHYSICS, 104(2), 207–226.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1986 journal article
ON THE POISSON BRACKETS OF DIFFERENTIABLE GENERATORS IN CLASSICAL FIELD-THEORY
JOURNAL OF MATHEMATICAL PHYSICS, 27(2), 489–491.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1980 journal article
LOWEST ORDER G-2 OF W+/- BOSONS
LETTERE AL NUOVO CIMENTO, 27(7), 211–214.
Sources: Web Of Science, ORCID
Added: August 6, 2018
1979 journal article
EFFECT OF RADIATION ON THE OH- INFRARED-ABSORPTION OF QUARTZ CRYSTALS
JOURNAL OF APPLIED PHYSICS, 50(8), 5449–5452.
Sources: Web Of Science, ORCID
Added: August 6, 2018
Employment
Updated: October 17th, 2019 14:20
NC State University Raleigh, NC, US
Professor and Director of Undergraduate Studies
Physics
Education
Updated: December 28th, 2016 16:14
The University of Texas at Austin Austin, Tx, US
Ph.D. Physics
Physics
Oklahoma State University Stillwater, OK, US
Physics BS/Mathematics BS
Physics/Mathematics
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