Physics-to-gauge conversion at black hole horizons
High Energy Physics - Theory
2009-11-11 v3 General Relativity and Quantum Cosmology
Abstract
Requiring the presence of a horizon imposes constraints on the physical phase space. After a careful analysis of dilaton gravity in 2D with boundaries (including the Schwarzschild and Witten black holes as prominent examples), it is shown that the classical physical phase space is smaller as compared to the generic case if horizon constraints are imposed. Conversely, the number of gauge symmetries is larger for the horizon scenario. In agreement with a recent conjecture by 't Hooft, we thus find that physical degrees of freedom are converted into gauge degrees of freedom at a horizon.
Cite
@article{arxiv.hep-th/0512230,
title = {Physics-to-gauge conversion at black hole horizons},
author = {L. Bergamin and D. Grumiller and W. Kummer and D. V. Vassilevich},
journal= {arXiv preprint arXiv:hep-th/0512230},
year = {2009}
}
Comments
32 pages, uses iopart_mod.cls, v2: added ref, v3: added paragraph in conclusions