A Proposed Absolute Entropy of Near Extremal Kerr-Newman Black Hole

Details A Proposed Absolute Entropy of Near Extremal Kerr-Newman Black Hole A Proposed Absolute Entropy of Near Extremal Kerr-Newman Black Hole

2001-04-29

arxiv.org/abs/gr-qc/0104098v2

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

9 pages, LaTex; v2: more referrences added

Scientific paper

Some problems have been found as to the definition of entropy of black hole being applied to the extremal Kerr-Newman case, which has conflicts with the third law of thermodynamics. We have proposed a new modification for the near extremal one, which not only obeys the third law, but also does not conflict with other results in black hole thermodynamics. Then we proved that the inner horizon has temperature and proposed that the inner horizon contributes to the entropy of the near extremal one so that the entropy of it has a modified form and vanishes at absolute zero temperature.

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