Entropy in the NUT-Kerr-Newman Black Holes Due to an Arbitrary Spin Field
Xian-Hui Ge, You-Gen Shen
Abstract
Membrane method is used to compute the entropy of the NUT-Kerr-Newman black holes. It is found that even though the Euler characteristic is greater than two, the Bekenstein-Hawking area law is still satisfied. The formula S=χA/8 relating the entropy and the Euler characteristic becomes inapplicable for non-extreme four dimensional NUT-Kerr-Newman black holes.
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