Two-scalar-field model for the interaction of dark energy and dark matter

• Tipo: Artigo em Revista Científica Internacional
• Data: 2012

Autores

bertolami, o (Autor) FCUP; carrilho, p (Autor) Outra; Jorge Páramos (Autor) FCUP

Revista

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

Vol. 86 Nº 025008

ISSN: 1550-7998

Editora: American Physical Society

Indexação

ISI Web of Knowledge - 31 Citações

Scopus - 30 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Física

Outras Informações

ID Authenticus: P-002-3BS

DOI: 10.1103/PhysRevD.86.103522

Abstract (EN): In this paper, we study the effects of an interaction between dark matter and dark energy through a two-scalar-field model with a potential V(phi, chi) = e(-lambda phi) P(phi, chi), where P(phi, chi) is a polynomial. We show that the cosmic expansion dynamics of the Universe is reproduced for a large range of the bare mass of the dark matter field and that there exist solutions with transient accelerated expansion. A modification in the exponential behavior of the potential is studied, with important physical implications, including the possibility of more realistic transient acceleration solutions.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 8