Bulk viscous fluid hypersurface-homogeneous cosmological models with time varying G and Λ

Details Bulk viscous fluid hypersurface-homogeneous cosmological models with time varying G and Λ Bulk viscous fluid hypersurface-homogeneous cosmological models with time varying G and Λ

Nov 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010ap%26ss.330..151s&link_type=abstract

Astrophysics and Space Science, Volume 330, Issue 1, pp.151-156

Astronomy and Astrophysics

Astrophysics

2

Hypersurface–Homogeneous, Bulk Viscosity, Variable G And Λ

Scientific paper

Hypersurface-homogeneous cosmological models containing a bulk viscous fluid with time varying G and Λ have been presented. We have shown that the field equations are solvable for any arbitrary cosmic scale function. The viscosity coefficient of bulk viscous fluid is assumed to be a power function of the energy density. Exact solutions of Einstein’s field equations are obtained which represent an expanding, shearing and accelerating/decelerating models of the universe. The physical and kinematical behaviours of the models are also discussed.

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