Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2006-03-26
Phys.Lett.B639:354-361,2006
Physics
High Energy Physics
High Energy Physics - Theory
Latex, 11 pages including two eps figures, two more references added, minor changes, to appear in PLB
Scientific paper
10.1016/j.physletb.2006.06.027
Recently a five-dimensional Kaluza-Klein black hole solution with squashed horizon has been found in hep-th/0510094. The black hole spacetime is asymptotically locally flat and has a spatial infinity $S^1 \hookrightarrow S^{2}$. By using "boundary counterterm" method and generalized Abbott-Deser method, we calculate the mass of this black hole. When an appropriate background is chosen, the generalized Abbott-Deser method gives the same mass as the "boundary counterterm" method. The mass is found to satisfy the first law of black hole thermodynamics. The thermodynamic properties of the Kaluza-Klein black hole are discussed and are compared to those of its undeformed counterpart, a five-dimensional Reissner-Nordstr\"om black hole.
Cai Rong-Gen
Cao Li-Ming
Ohta Nobuyoshi
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