Zero temperature black holes and the failure of semi-classical analysis

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The extreme Reissner-Nordström black holes have zero surface gravity. However, a semi-classical analysis seems to be ill-definite for these objects and apparently no notion of temperature exists for them. It is argued here that these properties are shared for all kind of black holes whose surface gravity is zero. Two examples are worked out explicitely: the scalar-tensor cold black holes and extreme black holes resulting from a gravity system coupled to a generalized Maxwell field in higher dimensions. The reasons for this anomolous behaviour are discussed as well as its thermodynamics implications.
Latex file, 8 pages

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General Relativity and Quantum Cosmology, High Energy Physics - Theory

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http://salesiana.dossiersoluciones.com/handle/123456789/34686

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/gr-qc/0309022
 http://arxiv.org/abs/gr-qc/0309022

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arXiv