Charged black holes in effective string theory

Details Charged black holes in effective string theory Charged black holes in effective string theory

1992-12-23

arxiv.org/abs/hep-th/9212146v1

Phys.Rev. D47 (1993) 5259-5269

Physics

High Energy Physics

High Energy Physics - Theory

17 pages, 5 figures not included, plain TeX

Scientific paper

10.1103/PhysRevD.47.5259

We investigate the qualitative new features of charged dilatonic black holes which emerge when both the Yang-Mills and Gauss-Bonnet curvature corrections are included in the effective action. We consider perturbative effects by an expansion up to second order in the inverse string tension on the four dimensional Schwarzschild background and determine the backreaction. We calculate the thermodynamical functions and show that for magnetic charge above a critical value, the temperature of the black hole has a maximum and goes to zero for a finite value of the mass. This indicates that the conventional Hawking evaporation law is modified by string theory at a classical level.

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