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Nonthermal nature of extremal Kerr black holes

Tony Rothman
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Abstract

Liberati, Rothman and Sonego have recently showed that objects collapsing into extremal Reissner-Nordstrom black holes do not behave as thermal objects at any time in their history. In particular, a temperature, and hence thermodynamic entropy, are undefined for them. I demonstrate that the analysis goes through essentially unchanged for Kerr black holes.

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Tony Rothman. 2001-03-26. Nonthermal nature of extremal Kerr black holes. https://doi.org/10.1016/s0375-9601(00)00515-6

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