Phenomenological models of Universe with varying $G$ and $\Lambda$

Abstract

In this article we will consider several phenomenological models for the Universe with varying $G$ and $\Lambda (t)$, where $G$ is the gravitational "constant" and $\Lambda (t)$ 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 $\Lambda (t)$ 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.

19 pages. revisited according to the comments of referees. arXiv admin note: text overlap with arXiv:astro-ph/0004125, arXiv:1304.1961 by other authors

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Cited by in corpus (4)

• Higher order corrections of the extended Chaplygin gas cosmology with varying $G$ and $\Lambda$
• Interaction between modified Chaplygin gas and ghost dark energy in presence of extra dimensions
• Quintessence Cosmology with an Effective $\Lambda$-Term in Lyra Manifold
• Toy models of Universe with an Effective varying $\Lambda$-Term in Lyra Manifold