Mutually interacting Tachyon dark energy with variable $G$ and $\Lambda$

Abstract

In this paper we consider Tachyonic scalar field as dark energy with interaction between components in the case of variable $G$ and $\Lambda$. 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.

17 pages, accepted by Research in Astronomy and Astrophysics (RAA). arXiv admin note: text overlap with arXiv:1402.2592 by other authors

References in corpus (13)

• Interacting models may be key to solve the cosmic coincidence problem
• Testing the interaction between dark energy and dark matter via latest observations
• FRW Bulk Viscous Cosmology with Modified Chaplygin Gas in Flat Space
• Effect of Varying Bulk Viscosity on Generalized Chaplygin Gas
• A model of interacting holographic dark energy at the Ricci's scale
• Correspondence between entropy-corrected holographic and Gauss-Bonnet dark energy models
• Interacting Entropy-Corrected Holographic Dark Energy and IR Cut-Off Length
• Interacting Ghost Dark Energy Models with Variable $G$ and $\Lambda$
• The effect of Dark Matter and Dark Energy interactions on the peculiar velocity field and the kinetic Sunyaev-Zel'dovich effect
• Latest Observational Constraints to the Ghost Dark Energy Model by Using Markov Chain Monte Carlo Approach
• Interaction between viscous varying modified cosmic Chaplygin gas and Tachyonic fluid
• Constraining the interacting dark energy models from weak gravity conjecture and recent observations
• On detecting interactions in the dark sector with H(z) data

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• Cosmological model involving an interacting van der Waals fluid
• On a phenomenology of the accelerated expansion with a varying ghost dark energy
• Quintessence Cosmology with an Effective $\Lambda$-Term in Lyra Manifold
• Late time attractors of some varying Chaplygin gas cosmological models