Abstract
Some LRS Bianchi type V viscous-fluid cosmological models are investigated, in which the coefficient of shear viscosity is considered as proportional to the scale of expansion in the model. This leads toA=Bn, whereA andB are metric potentials,n being a constant. The coefficient of bulk viscosity is also assumed to be a power function of mass density. The cosmological constant is found to be a decreasing function of time, which is supported by results from recent type Ia supernovae observations. Some physical aspects of the models are also discussed.
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Pradhan, A., Yadav, L. & Yadav, A.K. Viscous fluid cosmological models in LRS Bianchi type V universe with varyingΛ . Czech J Phys 54, 487–498 (2004). https://doi.org/10.1023/B:CJOP.0000020586.43735.b5
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DOI: https://doi.org/10.1023/B:CJOP.0000020586.43735.b5