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Mass and Thermodynamics of Kaluza-Klein Black Holes with Squashed Horizons

Rong-Gen Cai·Li-Ming Cao·Nobuyoshi Ohta
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Abstract

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-Nordström black hole.

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Rong-Gen Cai, Li-Ming Cao, Nobuyoshi Ohta. 2006-06-15. Mass and Thermodynamics of Kaluza-Klein Black Holes with Squashed Horizons. https://doi.org/10.1016/j.physletb.2006.06.027

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