Volume 85, Number 6, March 2009
|Number of page(s)||4|
|Published online||08 April 2009|
No contributions to the extremal–black-hole entropy from spin fields
Department of Physics, Zhejiang University of Technology - Hangzhou 310032, China
Corresponding author: email@example.com
Accepted: 27 February 2009
The entropy of the extremal Reissner-Nordström black hole due to the gravitational, electromagnetic, neutrino and scalar fields is investigated by using the brick-wall model. Whether extremalization or quantization are carried out first, the entropy satisfies the Nernst theorem when the inner Cauchy horizon is taken into account. Therefore the quantum entropy of the extremal black hole, calculated via the brick-wall model, does not require any regularization.
PACS: 04.70.Dy – Quantum aspects of black holes, evaporation, thermodynamics / 04.62.+v – Quantum fields in curved spacetime / 97.60.Lf – Black holes
© EPLA, 2009
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