The topological RN-AdS black holes cannot be overcharged by the new version of gedanken experiment

Huang, Yong-Ming; Tian, Yu; Wu, Xiao-Ning; Zhang, Hongbao

doi:10.1016/j.physletb.2022.137031

Physics Letters B

2022

DOI: 10.1016/j.physletb.2022.137031

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The topological RN-AdS black holes cannot be overcharged by the new version of gedanken experiment

Yong-Ming Huang

Yu Tian

Xiao-Ning Wu

et al.

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2023

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Cited by 2 publications

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Holographic thermal correlators for hyperbolic CFTs

Bhatta,

Chakrabortty,

Mandal

et al. 2023

J. High Energ. Phys.

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We use holography to compute the exact form of retarded Green’s functions for a scalar operator with conformal dimension ∆ in a thermal CFT and in its related counterpart with chemical potential in R1 × H3. In our analysis, we recast the wave equation of a scalar field in the normal form of Heun’s equation in the dual gravity theories described by the AdS hyperbolic blackhole and its charged version. Heun’s equation is identified to the semiclassical limit of the BPZ equation for a five-point correlator with one degenerate field insertion in the Liouville theory on the Riemann sphere. The crossing symmetry of conformal block in the Liouville theory eventually gives rise to a set of connection formulas among the solutions of Heun’s equation evaluated at different regular singularities. We use the connection formula to reproduce the leading order behaviors of the scalar field near the horizon as well as near the boundary and achieve the exact form of the retarded thermal Green’s function. We show a recipe to obtain the exact retarded Green’s function for a thermal CFT dual to AdS blackbrane from a high-temperature limit accompanied by a complex mapping on AdS hyperbolic blackhole. Moreover, we show the retarded Green’s function for the boundary CFT of Rindler AdS spacetime admits a free integer parameter.

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Holographic thermal correlators for hyperbolic CFTs

Bhatta,

Chakrabortty,

Mandal

et al. 2023

J. High Energ. Phys.

View full text Add to dashboard Cite

show abstract

First law of black hole thermodynamics and the weak cosmic censorship conjecture for Kerr–Newman Taub–NUT black holes

Yang,

Guo,

Wei

et al. 2023

Eur. Phys. J. C

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Stimulated by the recent researches of black hole thermodynamics for black hole with Newman–Unti–Tamburino (NUT) parameter, we investigate the thermodynamics and weak cosmic censorship conjecture for a Kerr–Newman Taub–NUT black hole. By defining the electric charge as a Komar integral over the event horizon, we construct a consistent first law of black hole thermodynamics for a Kerr–Newman Taub–NUT black hole through Euclidean action. Having the first law of black hole thermodynamics, we investigate the weak cosmic censorship conjecture for the black hole with a charged test particle and a complex scalar field. We find that an extremal black hole cannot be destroyed by a charged test particle and a complex scalar field. For a near-extremal black hole with small NUT parameter, it can be destroyed by a charged test particle but cannot be destroyed by a complex scalar field.

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The topological RN-AdS black holes cannot be overcharged by the new version of gedanken experiment

Cited by 2 publications

References 45 publications

Holographic thermal correlators for hyperbolic CFTs

Holographic thermal correlators for hyperbolic CFTs

First law of black hole thermodynamics and the weak cosmic censorship conjecture for Kerr–Newman Taub–NUT black holes

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