Abstract
We make use of the Hamilton–Jacobi and Parikh-Wilczek methods to investigate the Hawking radiation from the event horizon of a new charged anti-de Sitter black hole in four-dimensional Gauss-Bonnet gravity space–time. Both the tunneling rate of charged particles and the Bekenstein-Hawking entropy are evaluated. The emission spectrum is an impure thermal one and consistent with an underlying unitary theory. There is no difference between the emission rate of massive particle and that of massless one. The entropy is modified by a logarithmic term so that the area law of the black hole entropy is violated. It satisfies the first law of black hole thermodynamics and has the same expression as that calculated by Loop Quantum Gravity and String Theory. When the Gauss-Bonnet coupling coefficient is equal to zero, the logarithmic correction vanishes and the Bekenstein-Hawking relation in general relativity is recovered. So our results show the effects of the Gauss-Bonnet modified gravity on the Bekenstein-Hawking entropy and Hawking radiation.
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23 November 2021
A Correction to this paper has been published: https://doi.org/10.1007/s10714-021-02875-3
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Acknowledgements
The research is supported by Guangdong Basic and Applied Basic Research Foundation (Grant Nos. 2021A1515010246). It is also supported by the Education Department of Guangdong Province (Grant Nos. 2017KZDXM056) and the ‘Climbing Program’ Special Funds of Guangdong (Grant Nos. pdjh2020b0362).
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Li, GQ., Mo, JX. & Zhuang, YW. Corrections to Hawking radiation and Bekenstein-Hawking entropy of novel four-dimensional black holes in Gauss- Bonnet gravity. Gen Relativ Gravit 53, 97 (2021). https://doi.org/10.1007/s10714-021-02863-7
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DOI: https://doi.org/10.1007/s10714-021-02863-7