1208.1388 (Jian-hua He et al.)

Revisit the $Λ$CDM Universe in $f(R)$ gravity    [PDF]

Jian-hua He, Bin Wang

We perform a number of explicit reconstructions for the $f(R)$ gravity model to give rise to the particular $\Lambda$CDM evolution of the universe. We find well-defined real valued analytical forms for the $f(R)$ model to describe the universe both in the early epoch from radiation to matter dominated era and the late time acceleration period. We further examine the viability of the derived $f(R)$ model and find that it is viable to describe the universe evolution in the past and there does not exist the future singularity in the Lagrange.

View original: http://arxiv.org/abs/1208.1388