Unifying an asymmetric bounce to the dark energy in Chern-Simons F(R) gravity

Understand

We propose a cosmological scenario in which the universe undergoes through a non-singular bounce, and after the bounce, it decelerates having a matter-like dominated evolution during some regime of the deceleration era, and finally at the present epoch it evolves through an accelerating stage.

• Our aim is to study such evolution in the context of Chern-Simons corrected F(R) gravity theory and confront the model with various observational data.
• Using the reconstruction technique, and in addition by employing suitable boundary conditions, we determine the form of F(R) for the entire possible range of the cosmic time.
• The form of F(R) seems to unify a non-singular bounce with a dark energy epoch, in particular, from a non-singular bounce to a deceleration epoch and from a deceleration epoch to a late time acceleration era.