Entropy of an extremal regular black hole

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dc.creatorMyung, Yun Soo
dc.creatorKim, Yong-Wan
dc.creatorPark, Young-Jai
dc.date2007-05-17
dc.date2007-12-10
dc.date.accessioned2026-07-07T11:16:11Z
dc.date.available2026-07-07T11:16:11Z
dc.descriptionWe introduce a magnetically charged extremal regular black hole in the coupled system of Einstein gravity and nonlinear electrodynamics. Its near horizon geometry is given by $AdS_2\times S^2$. It turns out that the entropy function approach does not automatically lead to a correct entropy of the Bekenstein-Hawking entropy. This contrasts to the case of the extremal Reissner-Norström black hole in the Einstein-Maxwell theory. We conclude that the entropy function approach does not work for a magnetically charged extremal regular black hole without singularity, because of the nonlinearity of the entropy function.
dc.description17 Pages, 4 figures, version to appear in Phys. Lett. B
dc.identifierhttps://arxiv.org/abs/0705.2478
dc.identifierhttp://arxiv.org/abs/0705.2478
dc.identifierPhys.Lett.B659:832-838,2008
dc.identifierdoi:10.1016/j.physletb.2007.12.007
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/192589
dc.subjectGeneral Relativity and Quantum Cosmology
dc.subjectHigh Energy Physics - Theory
dc.titleEntropy of an extremal regular black hole
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