10.1016/S0275-1062(03)00034-1

Boson entropy in the NUT-Kerr-Newman black holes in the background of de Sitter space-timet

Abstract

It is well known that the Euler characteristic number of most black holes is 2 (or 0), and that only NUT-Kerr-Newman black holes' Euler characteristic number is over 2. Therefore, it is significant to calculate the entropy in the NUT-Kerr-Newman black holes. In this paper, we calculated the entropy of boson field in the NUT-Kerr-Newman black holes in the background of the de Sitter space-time by using the improved membrane model established with the brick-wall method. The results show that if the cut-off is properly chosen, the entropy in the black holes still satisfies the Bekenstein-Hawking area law

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Shanghai Astronomical Observatory,Chinese Academy of Sciences

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oai:ir.shao.ac.cn/:331011/18286Last time updated on 1/20/2020

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