paper

Dilatonic Black Holes in Higher Curvature String Gravity

arXiv:hep-th/9511071 · doi:10.1103/PhysRevD.54.5049

Abstract

We give analytical arguments and demonstrate numerically the existence of black hole solutions of the 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.

22 pages, Latex file, 7 Latex figures already included

References in corpus (4)

Cited by in corpus (496)