Mutually interacting Tachyon dark energy with variable $G$ and $\Lambda$
General Relativity and Quantum Cosmology
2015-02-03 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
In this paper we consider Tachyonic scalar field as dark energy with interaction between components in the case of variable and . We assume a flat Universe with specific form of scale factor and study cosmological parameters numerically and graphically. Statefinder analysis also performed as well. In the special choice of interaction parameters we succeed to obtain analytical expression of densities. We find that our model will be stable in the late stage but there is an instability at the early Universe.
Keywords
Cite
@article{arxiv.1309.7496,
title = {Mutually interacting Tachyon dark energy with variable $G$ and $\Lambda$},
author = {J. Sadeghi and M. Khurshudyan and M. Hakobyan and H. Farahani},
journal= {arXiv preprint arXiv:1309.7496},
year = {2015}
}
Comments
17 pages, accepted by Research in Astronomy and Astrophysics (RAA). arXiv admin note: text overlap with arXiv:1402.2592 by other authors