Viscous fluid cosmology with a cosmological constant

Details Viscous fluid cosmology with a cosmological constant Viscous fluid cosmology with a cosmological constant

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009ap%26ss.323..407s&link_type=abstract

Astrophysics and Space Science, Vol. 323, p. 407-414

Mathematics

Logic

Hubble Parameter, Deceleration Parameter, Cosmological Constant, Viscous Fluid

Scientific paper

Exact solutions of the field equations for a Bianchi type-I space-time, filled with a viscous fluid and cosmological constant, are obtained. We utilize the constancy of deceleration parameter to get singular and non-singular solutions. We investigate a number of solutions with constant and time-varying cosmological constant together with a linear relation between shear viscosity and expansion scalar. Due to dissipative processes, the mean anisotropy and shear of the model tend to zero at a faster rate.

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