Gravitational anomalies and entropy
General Relativity and Quantum Cosmology
2013-01-29 v2 High Energy Physics - Theory
Abstract
A derivation of entropy from the expressions for two dimensional gravitation anomalies is given. Starting from the near horizon anomalous energy-momentum tensors corresponding to particular anomalies, the Virasoro algebra with central extension is obtained. The central charge is identified by comparing with the standard form of the algebra. Then the conserved charge in the ground state is computed. Finally, using the Cardy formula the entropy is obtained. Here both the vector and chiral theories are discussed.
Cite
@article{arxiv.1210.3306,
title = {Gravitational anomalies and entropy},
author = {Bibhas Ranjan Majhi},
journal= {arXiv preprint arXiv:1210.3306},
year = {2013}
}
Comments
V2: refs. updated, published in General Relativity and Gravitation