Dilatonic Black Holes in Higher Curvature String Gravity

Details Dilatonic Black Holes in Higher Curvature String Gravity Dilatonic Black Holes in Higher Curvature String Gravity

1995-11-10

arxiv.org/abs/hep-th/9511071v1

Phys.Rev.D54:5049-5058,1996

Physics

High Energy Physics

High Energy Physics - Theory

22 pages, Latex file, 7 Latex figures already included

Scientific paper

10.1103/PhysRevD.54.5049

We give analytical arguments and demonstrate numerically the existence of black hole solutions of the $4D$ Effective Superstring Action in the presence of Gauss-Bonnet quadratic curvature terms. The solutions possess non-trivial dilaton hair. The hair, however, is of ``secondary" type", in the sense that the dilaton charge is expressed in terms of the black hole mass. Our solutions are not covered by the assumptions of existing proofs of the ``no-hair" theorem. We also find some alternative solutions with singular metric behaviour, but finite energy. The absence of naked singularities in this system is pointed out.

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