C-Field Cosmological models with bulk viscosity and variable G in flat FRW space-time

AUTHOR AND
AFFILIATION

RAJ BALI and MEGHNA KUMAWAT
Department of Mathematics, University of Rajasthan Jaipur-302055 (INDIA)

KEYWORDS:

C-field Cosmology, bulk viscosity, variable G PACS Nos.: 98.80. Cq, 98.80. Hw.

Issue Date:

RAJ BALI and MEGHNA KUMAWAT, “C-Field Cosmological models with bulk viscosity and variable G in flat FRW space-time”, Journal of Ultra Scientist of Physical Sciences, Volume 24, Issue 2, Page Number , 2016

Pages:

RAJ BALI and MEGHNA KUMAWAT, “C-Field Cosmological models with bulk viscosity and variable G in flat FRW space-time”, Journal of Ultra Scientist of Physical Sciences, Volume 24, Issue 2, Page Number , 2016

Available from: http://www.ultrascientist.org/paper/412/

ISSN:

2319-8044 (Online) – 2231-346X (Print)

Source:

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DOI:

jusps-A

ABSTRACT:

Cosmological models with variable gravitational constant (G) and bulk viscosity in C-field cosmology for flat FRW space-time are investigated. To get the deterministic model of the universe, we have assumed G = Rn where R is the scale factor and n is a constant. Under this assumption, we have investigated two C-field cosmological models for two cases: (i)  = constant, (ii)  = constant, R 3R  where  is the coefficient of bulk viscosity,  the expansion in the model. The physical and geometrical aspects of the models and the effect of bulk
viscosity related with the observation are discussed.

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Cosmological models with variable gravitational constant (G)  and bulk viscosity in C-field cosmology for flat FRW space-time are investigated. To get the deterministic model of the universe, we have assumed G = Rn where R is the scale factor and n is a constant. Under this assumption, we have investigated two C-field cosmological models for two cases: (i)  = constant, (ii)  = constant, R 3R  where  is the coefficient of bulk viscosity,  the expansion in the model. The physical and geometrical aspects of the models and the effect of bulk
viscosity related with the observation are discussed.