Mimicking the cosmological constant: Constant curvature spherical solutions in a nonminimally coupled model

• Tipo: Artigo em Revista Científica Internacional
• Data: 2011

Autores

bertolami, o (Autor) FCUP; paramos, j (Autor) Outra

Revista

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

Vol. 84

ISSN: 1550-7998

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 32 Citações

Scopus - 34 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-002-MHG

DOI: 10.1103/physrevd.84.064022

Abstract (EN): The purpose of this study is to describe a perfect fluid matter distribution that leads to a constant curvature region, thanks to the effect of a nonminimal coupling. This distribution exhibits a density profile within the range found in the interstellar medium and an adequate matching of the metric components at its boundary. By identifying this constant curvature with the value of the cosmological constant and superimposing the spherical distributions arising from different matter sources throughout the universe, one is able to mimic a large-scale homogeneous cosmological constant solution.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 11