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Entropy in the NUT-Kerr-Newman Black Holes in the Background of de Sitter Space-Time
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GE Xian-Hui1,2;SHEN You-Gen1,2,3 |
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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Cite this article: |
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.
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Keywords:
04.70.Dy
04.62.+v
04.60.+n
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Published: 01 August 2002
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PACS: |
04.70.Dy
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(Quantum aspects of black holes, evaporation, thermodynamics)
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04.62.+v
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(Quantum fields in curved spacetime)
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04.60.+n
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