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Title: Statefinder hierarchy of bimetric and galileon models for concordance cosmology

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 ΛCDM and above mentioned cosmological models of dark energy, and finally show that Statefinder S{sub 2} is an excellent discriminant of ΛCDM and modified gravity models.
Authors:
 [1] ;  [2]
  1. Department of General and Theoretical Physics, Eurasian National University, Astana (Kazakhstan)
  2. Center For Theoretical Physics, Jamia Millia Islamia, New Delhi-110025 (India)
Publication Date:
OSTI Identifier:
22282612
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Cosmology and Astroparticle Physics; Journal Volume: 2013; Journal Issue: 10; Other Information: Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COMPARATIVE EVALUATIONS; COSMOLOGICAL CONSTANT; COSMOLOGICAL MODELS; COSMOLOGY; EXPANSION; GRAVITATION; NONLUMINOUS MATTER; UNIVERSE