Thermodynamics of (3+1)-dimensional black holes with toroidal or higher genus horizons

Details Thermodynamics of (3+1)-dimensional black holes with toroidal or higher genus horizons Thermodynamics of (3+1)-dimensional black holes with toroidal or higher genus horizons

1997-05-07

arxiv.org/abs/gr-qc/9705012v2

Phys.Rev. D56 (1997) 3600-3610

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

25 pages, REVTeX v3.1, contains 5 LaTeX figures. (Typos corrected, references and minor comments added. To be published in Phy

Scientific paper

10.1103/PhysRevD.56.3600

We examine counterparts of the Reissner-Nordstrom-anti-de Sitter black hole spacetimes in which the two-sphere has been replaced by a surface Sigma of constant negative or zero curvature. When horizons exist, the spacetimes are black holes with an asymptotically locally anti-de Sitter infinity, but the infinity topology differs from that in the asymptotically Minkowski case, and the horizon topology is not S^2. Maximal analytic extensions of the solutions are given. The local Hawking temperature is found. When Sigma is closed, we derive the first law of thermodynamics using a Brown-York type quasilocal energy at a finite boundary, and we identify the entropy as one quarter of the horizon area, independent of the horizon topology. The heat capacities with constant charge and constant electrostatic potential are shown to be positive definite. With the boundary pushed to infinity, we consider thermodynamical ensembles that fix the renormalized temperature and either the charge or the electrostatic potential at infinity. Both ensembles turn out to be thermodynamically stable, and dominated by a unique classical solution.

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