GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS: Bianchi Type-V Bulk Viscous Barotropic Fluid Cosmological Model with Variable G and A

Details GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS: Bianchi Type-V Bulk Viscous Barotropic Fluid Cosmological Model with Variable G and A GEOPHYSICS, ASTRONOMY, AND ASTROPHYSICS: Bianchi Type-V Bulk Viscous Barotropic Fluid Cosmological Model with Variable G and A

Aug 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008chphl..25.3090r&link_type=abstract

Chinese Physics Letters, Volume 25, Issue 8, pp. 3090-3093 (2008).

Physics

2

Scientific paper

We investigate the Bianchi type-V bulk viscous barotropic fluid cosmological model with variable gravitational constant G and the cosmological constant A, assuming the condition on metric potential as , where A, B, and C are functions of time t, while m and n are constants. To obtain the deterministic model, we also assume the relations P = p- 3ηH, p = γρ, η = ηoρs, where p is the isotropic pressure, η the bulk viscosity, 0 <= γ <= 1, H the Hubble constant, η0 and s are constants. Various physical aspects of the model are discussed. The case of n = 1 is also discussed to compare the results with the actual universe.

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