Bianchi type I two-fluid cosmological models with a variable G and Λ

Details Bianchi type I two-fluid cosmological models with a variable G and Λ Bianchi type I two-fluid cosmological models with a variable G and Λ

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ap%26ss.314...89o&link_type=abstract

Astrophysics and Space Science, Volume 314, Issue 1-3, pp. 89-94

Astronomy and Astrophysics

Astrophysics

2

Scientific paper

This paper presents anisotropic, homogeneous two-fluid cosmological models in a Bianchi type I space time with a variable gravitational constant G and cosmological constant Λ. In the two-fluid model, one fluid represents the matter content of the universe and another fluid is chosen to model the CMB radiation. We find a variety of solutions in which the cosmological parameter varies inversely with time t. We also discuss in detail the behavior of associated fluid parameters and kinematical parameters. This paper pictures cosmic history when the radiation and matter content of the universe are in an interactive phase. Here, Ω is closing to 1 throughout the cosmic evolution.

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