Five-dimensional black holes in heterotic string theory
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We review recent results on near-horizon static black hole solutions and entropy in R^2-corrected N=2 SUGRA in D=5, focusing on actions connected to heterotic string compactified on K3\times S^1. Comparison with α'-perturbative results, results obtained by using simple Gauss-Bonnet R^2-correction, OSV conjecture and microscopic stringy description (for small black holes) shows that situation in D=5 is, in a sense, even more interesting then in D=4.
5 pages, Based on talks presented at the III Southeastern European Workshop Challenges Beyond the Standard Model (September 2-9, 2007, Kladovo, Serbia), and DFG & NZZ Workshop on Field Theory, Non-commutative Geometry and Strings (November 9-11, 2007, Zagreb, Croatia)
5 pages, Based on talks presented at the III Southeastern European Workshop Challenges Beyond the Standard Model (September 2-9, 2007, Kladovo, Serbia), and DFG & NZZ Workshop on Field Theory, Non-commutative Geometry and Strings (November 9-11, 2007, Zagreb, Croatia)