Hamiltonian thermodynamics of the Reissner-Nordstro¨m-anti-de Sitter black hole
Abstract
We consider the Hamiltonian dynamics and thermodynamics of spherically symmetric Einstein-Maxwell spacetimes with a negative cosmological constant. We impose boundary conditions that enforce every classical solution to be an exterior region of a Reissner-Nordstro¨m-anti-de Sitter black hole with a nondegenerate Killing horizon, with the spacelike hypersurfaces extending from the horizon bifurcation two-sphere to the asymptotically anti-de Sitter infinity. The constraints are simplified by a canonical transformation, which generalizes that given by Kucharˇ in the spherically symmetric vacuum Einstein theory, and the theory is reduced to its true dynamical degrees of freedom. After quantization, the grand partition function of a thermodynamical grand canonical ensemble is obtained by analytically continuing the Lorentzian time evolution operator to imaginary time and taking the trace. A similar analysis under slightly modified boundary conditions leads to the partition function of a thermodynamical canonical ensemble. The thermodynamics in each ensemble is analyzed, and the conditions that the (grand) partition function be dominated by a classical Euclidean black hole solution are found. When these conditions are satisfied, we recover, in particular, the Bekenstein-Hawking entropy. The limit of a vanishing cosmological constant is briefly discussed.
- Publication:
-
Physical Review D
- Pub Date:
- August 1996
- DOI:
- 10.1103/PhysRevD.54.2647
- arXiv:
- arXiv:gr-qc/9602003
- Bibcode:
- 1996PhRvD..54.2647L
- Keywords:
-
- 04.60.Ds;
- 04.20.Fy;
- 04.60.Kz;
- 04.70.Dy;
- Canonical quantization;
- Canonical formalism Lagrangians and variational principles;
- Lower dimensional models;
- minisuperspace models;
- Quantum aspects of black holes evaporation thermodynamics;
- General Relativity and Quantum Cosmology;
- High Energy Physics - Theory
- E-Print:
- 34 pages, REVTeX v3.0. (Minor corrections and presentational revisions