Area-law versus Rényi and Tsallis black hole entropies

Abstract

The Rényi and Tsallis entropies are discussed as possible alternatives to the Bekenstein-Hawking area-law entropy. It is pointed out how replacing the entropy notion, but not the Hawking temperature and the thermodynamical energy may render the whole black hole thermodynamics inconsistent. The possibility to relate the Rényi and Tsallis entropies with the quantum gravity corrected Bekenstein-Hawking entropy is discussed.

arXiv commentExplanation expanded, one reference added to the bibliography, matches the version to appear in Phys. Rev. D

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