Entropy of a quantum field in rotating black holes

被引:132
|
作者
Lee, MH
Kim, JK
机构
[1] Department of Physics, Korea Advanced Institute of Science and Technology, Kusung-dong
来源
PHYSICAL REVIEW D | 1996年 / 54卷 / 06期
关键词
D O I
10.1103/PhysRevD.54.3904
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
By using the brick wall method we calculate a free energy and the entropy of the scalar field in rotating black holes. As one approaches the stationary limit surface rather than the event horizon in a comoving frame, these become divergent. Only when the field is comoving with the black hole (i.e., Omega(0) = Omega(H)) do the free energy and entropy become divergent at the event horizon. In the Hartle-Hawking state the leading terms of the entropy are A(1/h) + Bln(h) + finite, where h is the cutoff in the radial coordinate near the horizon. In terms of the proper distance cutoff epsilon it is written as S = NA(H)/epsilon(2). The origin of the divergence is that the density of states on the stationary surface and beyond it diverges.
引用
收藏
页码:3904 / 3914
页数:11
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