Results 21 to 30 of about 458,070 (185)
Generalized entropy of gravitational fluctuations
Journal of High Energy PhysicsThe corrections to holographic entanglement entropy from bulk quantum fields in a classical gravitational background are now well understood. They lead, in particular, to unitary Page curves for evaporating black holes.
Sean Colin-Ellerin +2 more
doaj +3 more sources
A gravitational entropy proposal [PDF]
Classical and Quantum Gravity, 2013 We propose a thermodynamically motivated measure of gravitational entropy based on the Bel-Robinson tensor, which has a natural interpretation as the effective super-energy-momentum tensor of free gravitational fields. The specific form of this measure differs depending on whether the gravitational field is Coulomb-like or wave-like, and reduces to the
Clifton, T, Ellis, GFR, Tavakol, R
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Is gravitational entropy quantized? [PDF]
Physical Review D, 2008 RevTeX 4; 4 pages; no ...
Kothawala, Dawood +2 more
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Entropy of the gravitational field [PDF]
Physical Review D, 1993 We derive a formula for the nonequilibrium entropy of a classical stochastic field in terms of correlation functions of this field. The formalism is then applied to define the entropy of gravitational perturbations (both gravitational waves and density fluctuations). We calculate this entropy in a specific cosmological model (the inflationary Universe)
, Brandenberger, , Mukhanov, , Prokopec
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Gravitational entropy and global structure [PDF]
Physical Review D, 1999 18 pages.
Hawking, S. W., Hunter, C. J.
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Gravitational entropy and quantum cosmology [PDF]
Classical and Quantum Gravity, 2001 We investigate the evolution of different measures of ``Gravitational Entropy'' in Bianchi type I and Lemaître-Tolman universe models. A new quantity behaving in accordance with the second law of thermodynamics is introduced. We then go on and investigate whether a quantum calculation of initial conditions for the universe based upon the Wheeler-DeWitt
Grøn, Øyvind, Hervik, Sigbjørn
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Logarithmic corrections to gravitational entropy and the null energy condition [PDF]
, 2016 Using a relation between the thermodynamics of local horizons and the null energy condition, we consider the effects of quantum corrections to the gravitational entropy.
Maulik Parikh, Andrew Svesko
core +2 more sources
Generalized gravitational entropy from total derivative action [PDF]
, 2015 We investigate the generalized gravitational entropy from total derivative terms in the gravitational action. Following the method of Lewkowycz and Maldacena, we find that the generalized gravitational entropy from total derivatives vanishes.
Miao, R. +3 more
core +1 more source
Expanding the Area of Gravitational Entropy [PDF]
, 2002 I describe how gravitational entropy is intimately connected with the concept of gravitational heat, expressed as the difference between the total and free energies of a given gravitational system.
Mann, R. B.
core +1 more source
Generalized gravitational entropy [PDF]
Journal of High Energy Physics, 2013 26+7 pages, 8 figures.
Lewkowycz, Aitor, Maldacena, Juan
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