Title of article
Kantowski-Sachs viscous fluid cosmological model with a varying lambda
Author/Authors
KANDALKAR, S. P. Government Vidarbha Institute of Science and Humanities - Department of Mathematics, INDIA , KHADE, P. P. Government Vidarbha Institute of Science and Humanities - Department of Mathematics, INDIA , GAWANDE, S. P. Government Vidarbha Institute of Science and Humanities - Department of Mathematics, INDIA
From page
155
To page
165
Abstract
We study the Kantowski-Sachs cosmological model filled with viscous fluid in the presence of cosmological term lambda. To get a deterministic solution, a condition between metric potentials is used. The viscous coefficient of bulk viscous fluid is assumed to be a power function of mass density, whereas coefficient of shear viscosity is considered proportional to scale of expansion in the model. It is found that the cosmological constant lambda is positive and is a decreasing function of time, which is supported by results from recent supernova observations. Some physical and geometrical properties of the models are also discussed. Key Words: Kantowski-Sachs viscous fluid model, cosmology, variable cosmological constant
Keywords
Kantowski , Sachs viscous fluid model , cosmology , variable cosmological constant
Journal title
Turkish Journal of Physics
Journal title
Turkish Journal of Physics
Record number
2528691
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