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Thermodynamics of Asymptotically de-Sitter Black Hole in dRGT Massive Gravity from R\'{e}nyi entropy

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arxiv 2208.14770 v2 pith:YSFIIL7O submitted 2022-08-31 gr-qc

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keywords blackholedrgtasymptoticallystableapproachdescribeddifferent
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The thermodynamic properties of the de Rham-Gabadadze-Tolley (dRGT) black hole in the asymptotically de Sitter (dS) spacetime are investigated by using R\'enyi entropy. It has been found that the black hole with asymptotically dS spacetime described by the standard Gibbs-Boltzmann statistics cannot be thermodynamically stable. Moreover, there generically exist two horizons corresponding to two thermodynamic systems with different temperatures, leading to a nonequilibrium state. Therefore, in order to obtain the stable dRGT black hole, we use the alternative R\'enyi statistics to analyze the thermodynamics properties in both the separated system approach and the effective system approach. Interestingly, we found that it is possible concurrently obtain positive pressure and volume for the dRGT black hole while it is not for the Schwarzschild-de Sitter (Sch-dS) black hole. Furthermore, the bounds on the nonextensive parameter for which the black hole being thermodynamically stable are determined. In addition, the key differences between the systems described by different approaches, e.g., temperature profiles and types of the Hawking-Page phase transition are pointed out.

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  1. Thermodynamics of Flat 4D Einstein-Gauss-Bonnet Black Hole with R\'enyi Entropy: An RPST-like formalism

    hep-th 2025-06 conditional novelty 5.0 of 10

    A Rényi-entropy version of the flat 4D-EGB black hole is shown to mimic the phase structure, thermodynamic geometry, and topological class of the AdS 4D-EGB black hole in RPST thermodynamics.

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