Thermodynamics and stability of hyperbolic charged black holes

被引:58
作者
Cai, RG [1 ]
Wang, AZ
机构
[1] Baylor Univ, Dept Phys, CASPER, Waco, TX 76798 USA
[2] Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
来源
PHYSICAL REVIEW D | 2004年 / 70卷 / 06期
基金
中国国家自然科学基金;
关键词
D O I
10.1103/PhysRevD.70.064013
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
In AdS space the black hole horizon can be a hypersurface with a positive, zero, or negative constant curvature, resulting in different horizon topology. Thermodynamics and stability of black holes in AdS spaces are quite different for different horizon curvatures. In this paper we study thermodynamics and stability of hyperbolic charged black holes with negative constant curvature horizon in the grand canonical ensemble and canonical ensemble, respectively. They include hyperbolic Reissner-Nordstrom black holes in arbitrary dimensions and hyperbolic black holes in the D=5,4,7 gauged supergravities. It is found that associated Gibbs free energies are always negative, which implies that these black hole solutions are globally stable and the black hole phase is dominant in the grand canonical ensemble, but there is a region in the phase space where the black hole is not locally thermodynamically stable with a negative heat capacity for a given gauge potential. In the canonical ensemble, the Helmholtz free energies are not always negative and heat capacities with fixed electric charge are not always positive, which indicates that the Hawking-Page phase transition may happen and black holes are not always locally thermodynamically stable.
引用
收藏
页码:064013 / 1
页数:14
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