Black holes and phase-space noncommutativity

• Tipo: Artigo em Revista Científica Internacional
• Data: 2009

Autores

bastos, c (Autor) Outra; bertolami, o (Autor) Outra; dias, nc (Autor) Outra; prata, jn (Autor) Outra

Revista

Título: Physical Review D - Particles, Fields, Gravitation and Cosmology

Vol. 80

ISSN: 1550-7998

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 51 Citações

Scopus - 48 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-003-E5V

DOI: 10.1103/physrevd.80.124038

Abstract (EN): We use the solutions of the noncommutative Wheeler-DeWitt equation arising from a Kantowski-Sachs cosmological model to compute thermodynamic properties of the Schwarzschild black hole. We show that the noncommutativity in the momentum sector introduces a quadratic term in the potential function of the black hole minisuperspace model. This potential has a local minimum and thus the partition function can be computed by resorting to a saddle point evaluation in the neighborhood of the minimum. The thermodynamics of the black hole is derived and the corrections to the usual Hawking temperature and entropy exhibit a dependence on the momentum noncommutative parameter, eta. Moreover, we study the t=r=0 singularity in the noncommutative regime and show that in this case the wave function of the system vanishes in the neighborhood of t=r=0.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 7