Black hole entropy in string-generated gravity models
高能物理 - 理论
2009-11-07 v3
摘要
The Euclidean action and entropy are computed in string-generated gravity models with quadratic curvatures, and used to argue that a negative mass extremal metric is the background for hyperbolic (k=-1) black hole spacetimes, k being the curvature constant of the event horizon. The entropy associated with a black hole is always positive for k=(0,1) family. The positivity of energy condition also ensures that the k=-1 (extremal) entropy is non-negative.
引用
@article{arxiv.hep-th/0212092,
title = {Black hole entropy in string-generated gravity models},
author = {Ishwaree P. Neupane},
journal= {arXiv preprint arXiv:hep-th/0212092},
year = {2009}
}
备注
5 pages, 3 figures, Physical Review D (Rapid Communication) version