Extremal dilatonic black holes in 4D Gauss-Bonnet gravity

Details Extremal dilatonic black holes in 4D Gauss-Bonnet gravity Extremal dilatonic black holes in 4D Gauss-Bonnet gravity

2007-12-29

arxiv.org/abs/0801.0032v1

Prog.Theor.Phys.Suppl.172:161-164,2008

Physics

High Energy Physics

High Energy Physics - Theory

4 pages, contribution to the proceedings of the 8th Asia-Pacific International Conference on Gravitation and Astrophysics (ICG

Scientific paper

10.1143/PTPS.172.161

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.

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