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arXiv · hep-th/0212105

Varying alpha and black hole entropy

Malcolm Fairbairn·Michel H. G. Tytgat
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Abstract

Recently it has been suggested that an increase in the fine structure constant alpha with time would decrease the entropy of a Reissner-Nordstrom black hole, thereby violating the second law of thermodynamics. In this note we point out that, at least for a certain class of charged dilaton black holes related to string theory, the entropy does not change under adiabatic variations of alpha and one might expect it to increase for non-adiabatic changes.

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Malcolm Fairbairn, Michel H. G. Tytgat. 2003-02-04. Varying alpha and black hole entropy. https://doi.org/10.1088/1126-6708%2F2003%2F02%2F005

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