Plane Symmetric Viscous Fluid Cosmological Models with Varying Λ-Term

Details Plane Symmetric Viscous Fluid Cosmological Models with Varying Λ-Term Plane Symmetric Viscous Fluid Cosmological Models with Varying Λ-Term

Nov 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007ijtp...46.2774p&link_type=abstract

International Journal of Theoretical Physics, Volume 46, Issue 11, pp.2774-2787

Mathematics

Logic

9

Cosmology, Viscous Models, Variable Cosmological Term

Scientific paper

Plane symmetric viscous fluid cosmological models of the universe with a variable cosmological term are investigated. The viscosity coefficient of bulk viscous fluid is assumed to be a power function of mass density whereas the coefficient of shear viscosity is to be proportional to rate of expansion in the model. We have also obtained a special model in which the shear viscosity is assumed to be zero. The cosmological constant Λ is found to be a decreasing function of time and a positive which is supported by results from recent supernovae Ia observations. Some physical and geometric properties of the models are also discussed.

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