Remarks on Renormalization of Black Hole Entropy
Sang Pyo Kim, Sung Ku Kim, Kwang-Sup Soh, Jae Hyung Yee
Abstract
We elaborate the renormalization process of entropy of a nonextremal and an extremal Reissner-Nordström black hole by using the Pauli-Villars regularization method, in which the regulator fields obey either the Bose-Einstein or Fermi-Dirac distribution depending on their spin-statistics. The black hole entropy involves only two renormalization constants. We also discuss the entropy and temperature of the extremal black hole.
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