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-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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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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