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arXiv · 1505.05174

On the temperature dependence of the absorption cross section for black holes in string theory

Filipe Moura
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Abstract

We study the low frequency absorption cross section of spherically symmetric nonextremal d-dimensional black holes. In the presence of alpha' corrections, this quantity must have an explicit dependence on the Hawking temperature of the form 1/T_H. This property of the low frequency absorption cross section is shared by the D1-D5 system from type IIB superstring theory already at the classical level, without alpha' corrections. We apply our formula to the simplest example, the classical d-dimensional Reissner-Nordstrom solution, checking that the obtained formula for the cross section has a smooth extremal limit. We also apply it for a d-dimensional Tangherlini-like solution with alpha'^3 corrections.

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Filipe Moura. 2015-05-19. On the temperature dependence of the absorption cross section for black holes in string theory. https://doi.org/10.1142/s0218271815420110

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