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Nonextremal Black Hole Microstates and U-duality

Gary Horowitz, Juan Maldacena, Andrew Strominger

hep-tharXiv:hep-th/9603109

Abstract

A six-parameter family of five-dimensional black hole solutions is constructed which are labeled by their mass, two asymptotic scalar fields and three charges. It is shown that the Bekenstein-Hawking entropy is exactly matched, arbitrarily far from extremality, by a simple but mysterious duality-invariant extension of previously derived formulae for the number of D-brane states in string theory.

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