Modified Chaplygin gas in Horava-Lifshitz gravity and constraints on its B parameter

作者：Paul B C^*; Thakur P; Saha A

来源：Physical Review D - Particles, Fields, Gravitation and Cosmology, 2012, 85(2): 024039.

DOI：10.1103/PhysRevD.85.024039

We present cosmological models with modified Chaplygin gas (MCG) in the framework of Horava-Lifshitz (HL) theory of gravity. The equation of state (EOS) for a MCG is a three-variable equation determined by A, alpha, B. The allowed values of these parameters of the EOS are determined using the recent astrophysical and cosmological observational data. For this we consider H(z) - z, BAO peak, CMB shift parameter data to obtain a suitable range of values of the parameters for a viable cosmological model. Considering the suitable range of effective neutrino parameter (Delta N-nu), the ranges of values of the B-parameter along with Lambda(S) (defined by Lambda, alpha, and B) and alpha are determined here by chi-square minimization.

• 出版日期2012-1-25