Coupled oscillators as models of quintom dark energy

Details Coupled oscillators as models of quintom dark energy Coupled oscillators as models of quintom dark energy

2008-02-19

arxiv.org/abs/0802.2595v2

Phys.Lett.B668:177-181,2008

Physics

High Energy Physics

High Energy Physics - Theory

11 pages, no figures

Scientific paper

10.1016/j.physletb.2008.08.033

We investigate quintom cosmology in FRW universes using isomorphic models consisting of three coupled oscillators, one of which carries negative kinetic energy. In particular, we examine the cosmological paradigms of minimally-coupled massless quintom, of two conformally-coupled massive scalars and of conformally-coupled massive quintom, and we obtain their qualitative characteristics as well as their quantitative asymptotic behavior. For open or flat geometries, we find that, independently of the specific initial conditions, the universe is always led to an eternal expansion.

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