Black hole remnants and the information loss paradox
Forty years after the discovery of Hawking radiation, its exact nature remains elusive. If
Hawking radiation does not carry any information out from the ever shrinking black hole, it …
Hawking radiation does not carry any information out from the ever shrinking black hole, it …
Gravitational entropy in Szekeres class I models
FA Pizaña, RA Sussman… - Classical and Quantum …, 2022 - iopscience.iop.org
Developing a self-consistent notion of gravitational entropy in the context of cosmological
structure formation has been so far an elusive task. Various theoretical proposals have been …
structure formation has been so far an elusive task. Various theoretical proposals have been …
A quantum peek inside the black hole event horizon
S Chakraborty, S Chakraborty - Classical and Quantum Aspects of Gravity …, 2017 - Springer
Abstract We solve the Klein-Gordon equation for a scalar field, in the background geometry
of a dust cloud collapsing to form a black hole in the (1+ 1) spacetime. This has been …
of a dust cloud collapsing to form a black hole in the (1+ 1) spacetime. This has been …
Some results on cosmological and astrophysical horizons and trapped surfaces
We study the evolution of horizons of black holes in the 1+ 1+ 2 covariant setting and
investigate various properties intrinsic to the geometry of the foliation surfaces of these …
investigate various properties intrinsic to the geometry of the foliation surfaces of these …
Cosmological black holes and white holes with time-dependent mass
We consider the causal structure of generalized uncharged McVittie spacetimes with
increasing central mass m (t) and positive Hubble factor H (t). Under physically reasonable …
increasing central mass m (t) and positive Hubble factor H (t). Under physically reasonable …
A gravitational energy–momentum and the thermodynamic description of gravity
G Acquaviva, D Kofroň, M Scholtz - Classical and Quantum …, 2018 - iopscience.iop.org
A proposal for the gravitational energy–momentum tensor, known in the literature as the
square root of Bel–Robinson tensor (SQBR), is analyzed in detail. Being constructed …
square root of Bel–Robinson tensor (SQBR), is analyzed in detail. Being constructed …
Gravitational entropy of local cosmic voids
RA Sussman, J Larena - Classical and Quantum Gravity, 2015 - iopscience.iop.org
We undertake a non-perturbative study of the evolution of the'gravitational entropy'proposed
by Clifton, Ellis and Tavakol (CET) on local expanding cosmic CDM voids of∼ 50–100 Mpc …
by Clifton, Ellis and Tavakol (CET) on local expanding cosmic CDM voids of∼ 50–100 Mpc …
Matching conditions in locally rotationally symmetric spacetimes and radiating stars
PN Khambule, R Goswami… - Classical and Quantum …, 2021 - iopscience.iop.org
We recast the well known Israel–Darmois matching conditions for locally rotationally
symmetric (LRS-II) spacetimes using the semitetrad 1+ 1+ 2 covariant formalism. This …
symmetric (LRS-II) spacetimes using the semitetrad 1+ 1+ 2 covariant formalism. This …
From entropy to gravitational entropy
S Guha - arXiv preprint arXiv:2306.04172, 2023 - arxiv.org
The concept of entropy forms the backbone of the principles of thermodynamics. RC Tolman
initiated the correlation between gravity and thermodynamics. The development of black …
initiated the correlation between gravity and thermodynamics. The development of black …
Newman–Penrose scalars and black hole equations of state
In this work we explore the connections between Newman–Penrose scalars, including the
Penrose–Rindler K-curvature, with the equation of state of asymptotically Anti-de Sitter …
Penrose–Rindler K-curvature, with the equation of state of asymptotically Anti-de Sitter …