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arxiv 2008.13744 v2 pith:23WTP4MZ submitted 2020-08-31 gr-qc cond-mat.stat-mechphysics.data-an

Pedro Pessoa , Bruno Arderucio Costa This is my paper · ORCID
classification gr-qccond-mat.stat-mechphysics.data-an
keywords entropyblackholeadditivityanalysisargueclosercomment
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In a recent paper [Entropy 2020, 22(1), 17] C. Tsallis states that entropy -- as in Shannon's or Kullback-Leiber's definitions -- is inadequate to interpret black hole entropy and suggests that a new non-additive functional should take the role of entropy. Here we counter argue by explaining the important distinction between the properties of extensivity and additivity, the latter is fundamental for entropy while the former is a property of particular thermodynamical systems that is not expected on black holes. We also point out other debatable statements in his analysis of black hole entropy.

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  1. Black Hole Thermodynamics via Tsallis Statistical Mechanics

    gr-qc 2025-02 conditional novelty 6.0 of 10

    The authors derive a q-modified black hole entropy from Tsallis statistics applied to a near-horizon gas and show that a negative non-extensive parameter can stabilize a Schwarzschild black hole.

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