Non-Supersymmetric Attractors and Entropy Function
Abstract
We study the entropy of non-supersymmetric extremal black holes which exhibit attractor mechanism by making use of the entropy function. This method, being simple, can be used to calculate corrections to the entropy due to higher order corrections to the action. In particular we apply this method for five dimensional non-supersymmetric extremal black hole which carries two magnetic charges and find the R^2 corrections to the entropy. Using the behavior of the action evaluated for the extremal black hole near the horizon, we also present a simple expression for C-function corrected by higher order corrections.
Cite
@article{arxiv.hep-th/0601016,
title = {Non-Supersymmetric Attractors and Entropy Function},
author = {Mohsen Alishahiha and Hajar Ebrahim},
journal= {arXiv preprint arXiv:hep-th/0601016},
year = {2009}
}
Comments
15 pages, Latex file, v2: references and some additional comments added, minor corrections, some comments about 5D supersymmetric BH added. v3:minor corrections, few comments added, refs. added