Constraints on oscillating dark energy models

Understand

The oscillating scenario of route to Lambda was recently proposed by us arXiv:0704.1651 as an alternative to a cosmological constant in a explanation of the current accelerating universe.

• In this scenario phantom scalar field conformally coupled to gravity drives the accelerating phase of the universe.
• In our model $\Lambda$CDM appears as a global attractor in the phase space.
• In this paper we investigate observational constraints on this scenario from recent measurements of distant supernovae type Ia, CMB R shift, BAO and $H(z)$ observational data.