Extremal dilatonic black holes in 4D Gauss-Bonnet gravity
arXiv:0801.0032 · doi:10.1143/PTPS.172.161
Abstract
This is a report of our recent investigation on the extremal dilatonic black holes in four dimensional Gauss-Bonnet gravity. We found that a global solution can exist only when the dilaton coupling is less than a critical value which can be determined numerically. Moreover, the black hole horizon is stretched by the Gauss-Bonnet correction and the entropy is twice the value given by Bekenstein-Hawking formula.
4 pages, contribution to the proceedings of the 8th Asia-Pacific International Conference on Gravitation and Astrophysics (ICGA8)