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Tightening the Penrose Inequality

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arxiv 2207.08833 v2 pith:UBGKC2LU submitted 2022-07-18 gr-qc hep-th

classification gr-qchep-th
keywords inequalityblackholespenroseareaboundextremalhole
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The Penrose inequality estimates the lower bound of the mass of a black hole in terms of the area of its horizon. This bound is relatively loose for extremal or near extremal black holes. We propose a new Penrose-like inequality for static black holes involving the mass, area of the black hole event horizon and temperature. Our inequality includes the Penrose inequality as its corollary, and it is saturated by both the Schwarzschild and Reissner-Nordstr\"om black holes. In the spherically-symmetric case, we prove this new inequality by assuming both the null and trace energy conditions.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Black Hole Entropy Bounded by the Specific Heat

    gr-qc 2025-07 conditional novelty 7.0 of 10

    A conjectured inequality bounding black hole entropy by its specific heat is proven for a special static class and verified for many rotating and charged black holes.

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