Can Black Hole Relax Unitarily?
High Energy Physics - Theory
2017-08-23 v2 Statistical Mechanics
General Relativity and Quantum Cosmology
Abstract
We review the way the BTZ black hole relaxes back to thermal equilibrium after a small perturbation and how it is seen in the boundary (finite volume) CFT. The unitarity requires the relaxation to be quasi-periodic. It is preserved in the CFT but is not obvious in the case of the semiclassical black hole the relaxation of which is driven by complex quasi-normal modes. We discuss two ways of modifying the semiclassical black hole geometry to maintain unitarity: the (fractal) brick wall and the worm-hole modification. In the latter case the entropy comes out correctly as well.
Keywords
Cite
@article{arxiv.hep-th/0406130,
title = {Can Black Hole Relax Unitarily?},
author = {Sergey N. Solodukhin},
journal= {arXiv preprint arXiv:hep-th/0406130},
year = {2017}
}
Comments
12 pages, Based on talks given at ``Black Holes IV'', Honey Harbour, June 2003 and at BW2003, Vrnjacka Banja, August 2003