Phantom accretion by black holes and the generalized second law of thermodynamics

Autor(es)

Lima, J. A. S. ^[1] ; Pereira, S. H. ^{[1, 2]} ; Horvath, J. E. ^[1] ; Guariento, Daniel C. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Astron Geofis & Ciencias Atmosfericas, BR-05508090 Sao Paulo - Brazil

^[2] Univ Fed Itajuba, BR-35900373 Itabira, MG - Brazil

^[3] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Astroparticle Physics; v. 33, n. 5-6, p. 292-295, JUN-JUL 2010.
• Citações Web of Science: 7

Resumo

The accretion of a phantom fluid with non-zero chemical potential by black holes is discussed with basis on the generalized second law of thermodynamics. For phantom fluids with positive temperature and negative chemical potential we demonstrate that the accretion process is possible, and that the condition guaranteeing the positiveness of the phantom fluid entropy coincides with the one required by the generalized second law. (C) 2010 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 04/13668-0 - Cosmologia na era da precisão: energia escura, matéria escura e radiação cósmica de fundo
• Beneficiário: Jose Ademir Sales de Lima
• Modalidade de apoio: Auxílio à Pesquisa - Temático