Horizon thermodynamics and spacetime mappings
General Relativity and Quantum Cosmology
2015-06-18 v1 Cosmology and Nongalactic Astrophysics
Abstract
When black holes are dynamical, event horizons are replaced by apparent and trapping horizons. Conformal and Kerr-Schild transformations are widely used in relation with dynamical black holes and we study the behaviour under such transformations of quantities related to the thermodynamics of these horizons, such as the Misner-Sharp-Hernandez mass (internal energy), the Kodama vector, surface gravity, and temperature. The transformation properties are not those expected on the basis of naive arguments.
Cite
@article{arxiv.1401.1189,
title = {Horizon thermodynamics and spacetime mappings},
author = {Valerio Faraoni and Vincenzo Vitagliano},
journal= {arXiv preprint arXiv:1401.1189},
year = {2015}
}
Comments
12 pages