Astronomy and Astrophysics – Astrophysics – General Relativity and Quantum Cosmology
Scientific paper
2001-04-14
Phys.Rev. D64 (2001) 104009
Astronomy and Astrophysics
Astrophysics
General Relativity and Quantum Cosmology
22 pages, 4 figures. Minor corrections
Scientific paper
10.1103/PhysRevD.64.104009
A point particle treatment to the statistical mechanics of BPS black holes in Einstein-Maxwell-dilaton theory is developed. Because of the absence of the static potential, the canonical partition function for $N$ BPS black holes can be expressed by the volume of the moduli space for them. We estimate the equation of state for a classical gas of BPS black holes by Pad\'e approximation and find that the result agrees with the one obtained by the mean-field approximation.
Kan Nahomi
Maki Takuya
Shiraishi Kiyoshi
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