Dynamical stability in scalar-tensor cosmology

Details Dynamical stability in scalar-tensor cosmology Dynamical stability in scalar-tensor cosmology

2011-11-05

arxiv.org/abs/1111.1305v2

Physics

General Physics

10 pages, 6 figures, to appear in Astrophysics and space sci. arXiv admin note: text overlap with arXiv: arXiv:1010.3589, arXi

Scientific paper

We study FRW cosmology for a double scalar - tensor theory of gravity where two scalar fields are nonminimally coupled to the geometry. In a framework to study stability and attractor solutions of the model in the phase space, we constraint the model parameters with the observational data. For an accelerating universe, the model behaves like quintom dark energy models and predicts a transition from quintessence era to phantom era.

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