Gravitational entropy of Kerr black holes

Classical invariants of General Relativity can be used to approximate the entropy of the gravitational field. In this work, we study two proposed estimators based on scalars constructed out from the Weyl tensor, in Kerr spacetime. In order to evaluate Clifton, Ellis and Tavakol’s proposal, we calcul...

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Detalles Bibliográficos
Autores principales: Pérez, Daniela, Romero, Gustavo Esteban
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2014
Materias:
Ciencias Astronómicas
Gravitation
General Relativity
Black Holes
Entropy
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/127116
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-127116
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Astronómicas
Gravitation
General Relativity
Black Holes
Entropy
spellingShingle Ciencias Astronómicas
Gravitation
General Relativity
Black Holes
Entropy
Pérez, Daniela
Romero, Gustavo Esteban
Gravitational entropy of Kerr black holes
topic_facet Ciencias Astronómicas
Gravitation
General Relativity
Black Holes
Entropy
description Classical invariants of General Relativity can be used to approximate the entropy of the gravitational field. In this work, we study two proposed estimators based on scalars constructed out from the Weyl tensor, in Kerr spacetime. In order to evaluate Clifton, Ellis and Tavakol’s proposal, we calculate the gravitational energy density, gravitational temperature, and gravitational entropy of the Kerr spacetime. We find that in the frame we consider, Clifton et al.’s estimator does not reproduce the Bekenstein-Hawking entropy of a Kerr black hole. The results are compared with previous estimates obtained by the authors using the Rudjord-Gr∅n-Hervik approach. We conclude that the latter represents better the expected behaviour of the gravitational entropy of black holes.
format Articulo
Preprint
author Pérez, Daniela
Romero, Gustavo Esteban
author_facet Pérez, Daniela
Romero, Gustavo Esteban
author_sort Pérez, Daniela
title Gravitational entropy of Kerr black holes
title_short Gravitational entropy of Kerr black holes
title_full Gravitational entropy of Kerr black holes
title_fullStr Gravitational entropy of Kerr black holes
title_full_unstemmed Gravitational entropy of Kerr black holes
title_sort gravitational entropy of kerr black holes
publishDate 2014
url http://sedici.unlp.edu.ar/handle/10915/127116
work_keys_str_mv AT perezdaniela gravitationalentropyofkerrblackholes
AT romerogustavoesteban gravitationalentropyofkerrblackholes
bdutipo_str Repositorios
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