Ten Theses on Black Hole Entropy

Rafael D. Sorkin (Perimeter Institute; Syracuse University)

Ten Theses on Black Hole Entropy

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arxiv hep-th/0504037 v2 pith:RDM5XXP4 submitted 2005-04-05 hep-th gr-qc

Rafael D. Sorkin (Perimeter Institute , Syracuse University) This is my paper · ORCID

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I present a viewpoint on black hole thermodynamics according to which the entropy: derives from horizon "degrees of freedom"; is finite because the deep structure of spacetime is discrete; is "objective" thanks to the distinguished coarse graining provided by the horizon; and obeys the second law of thermodynamics precisely because the effective dynamics of the exterior region is not unitary.

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Information-Theoretic Black Hole Entropy I: Beyond the Area Law
hep-th 2026-08 conditional novelty 6.0 of 10

Black hole entropy is proposed to equal the Kullback-Leibler divergence between a mass-biased N-bit ensemble and the uniform ensemble, with the area law as the leading 1/N term.

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