Semiclassical Loop Quantum Gravity and Black Hole Thermodynamics
General Relativity and Quantum Cosmology
2013-02-19 v2 High Energy Physics - Theory
Abstract
In this article we explore the origin of black hole thermodynamics using semiclassical states in loop quantum gravity. We re-examine the case of entropy using a density matrix for a coherent state and describe correlations across the horizon due to SU(2) intertwiners. We further show that Hawking radiation is a consequence of a non-Hermitian term in the evolution operator, which is necessary for entropy production or depletion at the horizon. This non-unitary evolution is also rooted in formulations of irreversible physics.
Cite
@article{arxiv.1203.5119,
title = {Semiclassical Loop Quantum Gravity and Black Hole Thermodynamics},
author = {Arundhati Dasgupta},
journal= {arXiv preprint arXiv:1203.5119},
year = {2013}
}