Quantum corrections to black hole entropy in string theory

Dabholkar, Atish (1995) Quantum corrections to black hole entropy in string theory Physics Letters B, 347 (3-4). pp. 222-229. ISSN 0370-2693

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Related URL: http://dx.doi.org/10.1016/0370-2693(95)00056-Q


The one-loop contribution to the entropy of a black hole from field modes near the horizon is computed in string theory. It is modular invariant and ultraviolet finite. There is an infrared divergence that signifies an instability near the event horizon of the black hole. It is due to the exponential growth of the density of states and the associated Hagedorn transition characteristic of string theory. It is argued that this divergence is indicative of a tree level contribution, and the Bekenstein-Hawking-Gibbons formula for the entropy should be understood in terms of string states stuck near the horizon.

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