Anisotropic universe with cosmic strings and bulk viscosity in a scalar-tensor theory of gravitation

Details Anisotropic universe with cosmic strings and bulk viscosity in a scalar-tensor theory of gravitation Anisotropic universe with cosmic strings and bulk viscosity in a scalar-tensor theory of gravitation

Oct 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ap%26ss.335..635r&link_type=abstract

Astrophysics and Space Science, Volume 335, Issue 2, pp.635-638

Astronomy and Astrophysics

Astrophysics

4

Viscosity, Anisotropic Universe, Cosmic Strings, Scalar Tensor Theory

Scientific paper

A spatially homogeneous and anisotropic Bianchi type-I cosmological model is obtained in a scalar-tensor theory of gravitation proposed by Saez and Ballester (Phys. Lett. A 113:467, 1986) when the source for energy momentum tensor is a bulk viscous fluid containing one dimensional cosmic strings. Some physical and kinematical properties of the model are discussed. It is observed that the bulk viscosity has a greater role in getting an accelerated expansion of the universe in this theory.

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