Entropy in the NUT-Kerr-Newman Black Holes in the Background of de Sitter Space-Time

Chin. Phys. Lett.

2002, Vol. 19

Issue (8): 1051-1053 DOI:

Original Articles

Entropy in the NUT-Kerr-Newman Black Holes in the Background of de Sitter Space-Time

GE Xian-Hui^1,2;SHEN You-Gen^1,2,3

¹Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 ²National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012 ³Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100080

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GE Xian-Hui, SHEN You-Gen 2002 Chin. Phys. Lett. 19 1051-1053

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Abstract We calculate the entropy of the fermion field in the NUT-Kerr-Newman black holes in the background of the de Sitter space-time by using the improved brick-wall method and the membrane model. Here the Euler characteristic of the black holes is over two. The results show that, as the cut-off is properly chosen, the entropy in the black hole satisfies the Bekenstein-Hawking area law.

Keywords: 04.70.Dy 04.62.+v 04.60.+n

Published: 01 August 2002

PACS:	04.70.Dy	(Quantum aspects of black holes, evaporation, thermodynamics)
	04.62.+v	(Quantum fields in curved spacetime)
	04.60.+n

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2002/V19/I8/01051

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