Gravitational anomalies and entropy
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.
- Publication:
-
General Relativity and Gravitation
- Pub Date:
- February 2013
- DOI:
- arXiv:
- arXiv:1210.3306
- Bibcode:
- 2013GReGr..45..345M
- Keywords:
-
- Gravitational anomalies;
- Virasoro algebra;
- Cardy formula;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- E-Print:
- V2: refs. updated, published in General Relativity and Gravitation