Entropy of extremal black holes

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After summarizing the development of black hole thermodynamics in the seventies, we describe a recent microscopic model. This model suggests that the Bekenstein-Hawking area formula holds for extremal black holes as well as for ordinary (non-extremal) ones. On the other hand, semiclassical studies have suggested a discontinuity between non-extremal and extremal cases. We indicate how a reconciliation has been brought about by summing over topologies.
Puri Workshop Talk, December 1996; LaTeX, 15 pages; minor changes

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High Energy Physics - Theory, General Relativity and Quantum Cosmology

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http://salesiana.dossiersoluciones.com/handle/123456789/150664

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-th/9704201
 http://arxiv.org/abs/hep-th/9704201

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arXiv