Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-11-13
Int.J.Mod.Phys.A14:1015-1034,1999
Physics
High Energy Physics
High Energy Physics - Theory
17 pages, LaTex, no figures
Scientific paper
10.1142/S0217751X99000506
We study the BPS black hole solutions of the (truncated) action for heterotic string theory compactified on a six-torus. The O(3,Z) duality symmetry of the theory, together with the bound state interpretation of extreme black holes, is used to generate the whole spectrum of the solutions. The corresponding spacetime structures, written in terms of the string metric, are analyzed in detail. In particular, we show that only the elementary solutions present naked singularities. The bound states have either null singularities (electric solutions) or are regular (magnetic or dyonic solutions) with near-horizon geometries given by the product of two 2d spaces of constant curvature. The behavior of some of these solutions as supersymmetric attractors is discussed. We also show that our approach is very useful to understand some of the puzzling features of charged black hole solutions in string theory.
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