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arXiv · 2007.15401

Exponential corrections to black hole entropy

Ayan Chatterjee·Amit Ghosh
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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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Ayan Chatterjee, Amit Ghosh. 2020-07-30. Exponential corrections to black hole entropy. https://doi.org/10.1103/physrevlett.125.041302

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