Results 91 to 100 of about 458,070 (185)

Entropy function from the gravitational surface action for an extremal near horizon black hole [PDF]

, 2015
It is often argued that all the information of a gravitational theory is encoded in the surface term of the action; which means one can find several physical quantities just from the surface term without incorporating the bulk part of the action.
Bibhas Ranjan Majhi
core   +1 more source

Boltzmann entropy of a Newtonian Universe [PDF]

, 2017
A dynamical estimate is given for the Boltzmann entropy of the Universe, under the simplifying assumptions provided by Newtonian cosmology. We first model the cosmological fluid as the probability fluid of a quantum-mechanical system.
Fernández de Córdoba, Pedro, Cabrera, D., D. Cabrera, J.M. Isidro, de Cordoba, P. Fernandez, Pedro Fernández de Córdoba, Isidro, J.M., Isidro, J. M., null null   +8 more
core   +1 more source

Entropy, Gravitation, and Thermodynamics

, 1999
The relationship between the intrinsic motion of gravity, light, and time is explored in terms of the principles of entropy, causality, energy, and symmetry conservation. A conceptual mechanism for gravity and the gravitational connection between quantum mechanics and relativity is explored.
openaire   +2 more sources

Binary AdS black holes coupled to a bath in Type IIB

Journal of High Energy Physics
We construct Type IIB string theory setups which, via double holography, realize two gravitational systems in separate AdS spaces which interact with each other and with a non-gravitational bath.
Evan Deddo, Leopoldo A.Pando Zayas, Christoph F. Uhlemann   +2 more
doaj   +1 more source

Gravitational entropy of a Kerr black hole [PDF]

The gravitational entropy of a Kerr black hole is calculated using a classical estimator based on the Bel-Robinson tensor, which has been recently proposed by Clifton, Ellis, and Tavakol.
Pérez, Daniela, Romero, Gustavo Esteban
core  

Gravitational potential from maximum entropy principle

, 2020
It is shown here in the framework of standard general relativity that the gravitational potential in static spacetime, equivalently the redshift factor, inside any kind of matter, can be derived from maximum entropy principle.
Roupas, Zacharias
core  

Timelike entanglement entropy with gravitational anomalies

Journal of High Energy Physics
We study the timelike entanglement entropy (TEE) in two dimensional conformal field theories (CFT) with gravitational anomalies. We employ analytical continuation to compute the timelike entanglement entropy for a pure timelike interval in such CFTs.
Chong-Sun Chu, Himanshu Parihar
doaj   +1 more source

Towards bit threads in general gravitational spacetimes

Journal of High Energy Physics
The concept of the generalized entanglement wedge was recently proposed by Bousso and Penington, which states that any bulk gravitational region a possesses an associated generalized entanglement wedge E(a) ⊃ a on a static Cauchy surface M in general ...
Dong-Hui Du, Jia-Rui Sun
doaj   +1 more source

Radiation entropy in asymptotically AdS black holes within f(Q) gravity

Nuclear Physics B
We employ the island formula to investigate the entanglement entropy of the Hawking radiation in an asymptotically AdS black hole background within the framework of f(Q) gravity.
Yipeng Liu, Wei Xu, Baocheng Zhang
doaj   +1 more source

Island formula from Wald-like entropy with backreaction

Journal of High Energy Physics
We propose a Lorentzian derivation of the generalized entropy associated with the island formula for black holes as a Wald-like entropy without reference to the exterior non-gravitating region or field-theoretic von Neumann entropy of Hawking radiation ...
Shinji Hirano
doaj   +1 more source