Obstructions on the horizon geometry from string theory corrections to Einstein gravity

Details Obstructions on the horizon geometry from string theory corrections to Einstein gravity Obstructions on the horizon geometry from string theory corrections to Einstein gravity

2005-08-16

arxiv.org/abs/hep-th/0508118v1

Phys.Lett. B627 (2005) 174-179

Physics

High Energy Physics

High Energy Physics - Theory

6 pages

Scientific paper

10.1016/j.physletb.2005.08.110

Higher dimensional Einstein gravity in vacuum admits static black hole solutions with an Einstein manifold of non constant curvature as a horizon. This gives a much richer family of static black holes than in four dimensional GR. However, as we show in this paper, the Gauss-Bonnet string theory correction to Einstein gravity poses severe limitations on the geometry of a horizon Einstein manifold. The additional stringy constraints rule out most of the known examples of exotic black holes with a horizon of non constant curvature.

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