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Exponential corrections to black hole entropy

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arxiv 2007.15401 v1 pith:JTWYROQV submitted 2020-07-30 gr-qc

Ayan Chatterjee , Amit Ghosh This is my paper · ORCID
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keywords areablackholeentropyhorizonmustquantumspectrum
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abstract

Using the quasilocal properties alone we show that the area spectrum of a black hole horizon must be discrete, independent of any specific quantum theory of gravity. The area spectrum is found to be half-integer spaced with values $8\pi \gamma \ell_{p}^{2}j$ where $j\in \mathbb{N}/2$. We argue that if microstate counting is carried out for quantum states residing on the horizon only, correction of $\exp(-\mathcal{A}/4\ell_{p}^{2})$ over the Bekenstein-Hawking area law must arise in black hole entropy.

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Cited by 5 Pith papers

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

  1. Big-Bang Nucleosynthesis and WIMP Dark Matter Freeze-Out as Probes of Yukawa Cosmology

    astro-ph.CO 2026-08 reject novelty 5.0 of 10

    Using BBN and WIMP relic density, the authors constrain the Yukawa gravity coupling α to about -0.017 to 0.018, with the lithium discrepancy still unexplained.

  2. Apparent horizon thermodynamics in an exponential $f(Q)$ gravity model

    gr-qc 2026-08 conditional novelty 5.0 of 10

    In an exponential f(Q) model, apparent-horizon entropy gains exponentially suppressed corrections to the area law, and the generalized second law excludes parameter values b>0.26 in the future-redshift region.

  3. Entropy-geometry correspondence as effective nonlocal gravity

    gr-qc 2026-08 conditional novelty 5.0 of 10

    Generalized entropies determine effective nonlocal operators and running Newton couplings, with the area law reproduced identically for any entropy function.

  4. A winding number analysis of Schwarzschild black hole stability in light of Planck-scale modified kinematics

    gr-qc 2026-07 conditional novelty 5.0 of 10

    For the cubic entropy correction S=πr_h²−αr_h³ arising from a Planck-scale modified dispersion relation, all physically allowed Schwarzschild-like branches have winding number w=−1, so no stable phase appears.

  5. Effective matter sectors from modified entropies

    gr-qc 2025-11 conditional novelty 4.0 of 10

    Choosing a modified entropy S(r) fixes a metric f(r)=1-4πM/S'(r), and the Einstein tensor of that metric acts as an anisotropic effective fluid.

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