Cosmological bounds on oscillating dark energy models

Details Cosmological bounds on oscillating dark energy models Cosmological bounds on oscillating dark energy models

2007-09-26

arxiv.org/abs/0709.4234v1

Phys.Lett.B656:15-18,2007

Astronomy and Astrophysics

Astrophysics

5 pages, 2 figures, Phys. Lett. B (in press)

Scientific paper

10.1016/j.physletb.2007.09.023

We study some cosmological constraints on the two phenomenological models of oscillating dark energy. In these scenarios, the equation of state of dark energy varies periodically and may provide a way to unify the early acceleration (inflation) and the late time acceleration of the universe. These models give also an effective way to tackle the so-called cosmic coincidence problem. We examine observational constraints on this class of models from the latest observational data including the \emph{gold} sample of 182 type Ia supernovae, the CMB shift parameter $R$ and the BAO measurements from the Sloan Digital Sky Survey.

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