Artigo Acesso aberto

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

2012; American Physical Society; Volume: 86; Issue: 10 Linguagem: Inglês

10.1103/physrevd.86.103522

ISSN

1550-7998

Autores

Orfeu Bertolami, P. Carrilho, Jorge Páramos,

Tópico(s)

Solar and Space Plasma Dynamics

Resumo

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.

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