Statistical entropy of charged two-dimensional black holes

Details Statistical entropy of charged two-dimensional black holes Statistical entropy of charged two-dimensional black holes

1998-03-08

arxiv.org/abs/hep-th/9803064v2

Phys.Lett. B430 (1998) 57-62

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, harvmac. Two references added. To be published in Phys. Lett. B

Scientific paper

10.1016/S0370-2693(98)00498-5

The statistical entropy of a five-dimensional black hole in Type II string theory was recently derived by showing that it is U-dual to the three-dimensional Banados-Teitelboim-Zanelli black hole, and using Carlip's method to count the microstates of the latter. This is valid even for the non-extremal case, unlike the derivation which relies on D-brane techniques. In this letter, I shall exploit the U-duality that exists between the five-dimensional black hole and the two-dimensional charged black hole of McGuigan, Nappi and Yost, to microscopically compute the entropy of the latter. It is shown that this result agrees with previous calculations using thermodynamic arguments.

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