Statefinder hierarchy of bimetric and galileon models for concordance cosmology
Ratbay MyrzakulovDepartment of General and Theoretical Physics, Eurasian National University, Astana, KazakhstanM. ShahalamCenter For Theoretical Physics, Jamia Millia Islamia, New Delhi-110025, India
2013en
ABI
Abstract
In this paper, we use Statefinder hierarchy method to distinguish between bimetric theory of massive gravity, galileon modified gravity and DGP models applied to late time expansion of the universe. We also carry out comparison between bimetric and DGP models using Statefinder pairs {r, s} and {r, q}. We show that statefinder diagnostic can differentiate between {\Lambda}CDM and above mentioned cosmological models of dark energy, and finally show that Statefinder S2 is an excellent discriminant of {\Lambda}CDM and modified gravity models.
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Cited by 30 references