Exact solutions in a scalar-tensor model of dark energy
High Energy Physics - Theory
2015-06-11 v1 General Relativity and Quantum Cosmology
Abstract
We consider a model of scalar field with non minimal kinetic and Gauss Bonnet couplings as a source of dark energy. Based on asymptotic limits of the generalized Friedmann equation, we impose restrictions on the kinetic an Gauss-Bonnet couplings. This restrictions considerable simplify the equations, allowing for exact solutions unifying early time matter dominance with transitions to late time quintessence and phantom phases. The stability of the solutions in absence of matter has been studied.
Keywords
Cite
@article{arxiv.1209.1137,
title = {Exact solutions in a scalar-tensor model of dark energy},
author = {L. N. Granda and E. Loaiza},
journal= {arXiv preprint arXiv:1209.1137},
year = {2015}
}
Comments
30 pages, 2 figures, to appear in JCAP