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arXiv · 2210.03732

Holographic Renyi entropies from hyperbolic black holes with scalar hair

Xiaoxuan Bai·Jie Ren
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Abstract

The Renyi entropies as a generalization of the entanglement entropy imply much more information. We analytically calculate the Renyi entropies (with a spherical entangling surface) by means of a class of neutral hyperbolic black holes with scalar hair as a one-parameter generalization of the MTZ black hole. The zeroth-order and third-order phase transitions of black holes lead to discontinuity of the Renyi entropies and their second derivatives, respectively. From the Renyi entropies that are analytic at $n=\infty$, we can express the entanglement spectrum as an infinite sum in terms of the Bell polynomials. We show that the analytic treatment is in agreement with numerical calculations for the low-lying entanglement spectrum in a wide range of parameters.

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Xiaoxuan Bai, Jie Ren. 2022-10-07. Holographic Renyi entropies from hyperbolic black holes with scalar hair. https://doi.org/10.1007/jhep12(2022)038

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