78 research outputs found
Phenomenological models of Universe with varying and
In this article we will consider several phenomenological models for the
Universe with varying and , where is the gravitational
"constant" and is a varying cosmological "constant". Two-component
fluid model taken into account. An interaction of the phenomenological form
between a barotropic fluid and a quintessence DE is supposed. Three different
forms of will be considered. The problem is analysed numerically
and behavior of different cosmological parameters investigated graphically.
Conclusion and discussions are given at the end of the work. In an Appendix an
information concerning to the other cosmological parameters is presented.Comment: 19 pages. revisited according to the comments of referees. arXiv
admin note: text overlap with arXiv:astro-ph/0004125, arXiv:1304.1961 by
other author
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