https://doi.org/10.1140/epjc/s10052-016-4328-x
Regular Article - Theoretical Physics
Dynamical analysis for a vector-like dark energy
Departamento de Física-Matemática, Instituto de Física, Universidade de São Paulo, Rua do Matão, Travessa R, 187, Cidade Universitária, 05508-090, São Paulo, SP, Brazil
* e-mail: rlandim@if.usp.br
Received:
11
May
2016
Accepted:
19
August
2016
Published online:
31
August
2016
In this paper we perform a dynamical analysis for a vector field as a candidate for the dark energy, in the presence of a barotropic fluid. The vector is one component of the so-called cosmic triad, which is a set of three identical copies of an abelian field pointing mutually in orthogonal directions. In order to generalize the analysis, we also assumed the interaction between dark energy and the barotropic fluid, with a phenomenological coupling. Both matter and dark energy eras can be successfully described by the critical points, indicating that the dynamical system theory is a viable tool to analyze asymptotic states of such cosmological models.
© The Author(s), 2016
