Interacting agegraphic dark energy model in tachyon cosmology coupled to matter

Abstract

Scalar-field dark energy models for tachyon fields are often regarded as an effective description of an underlying theory of dark energy. In this paper, we propose the agegraphic dark energy model in tachyon cosmology by interaction between the components of the dark sectors. In the formalism, the interaction term emerges from the tachyon field nonminimally coupled to the matter Lagrangian in the model rather than being inserted into the formalism as an external source. The model is constrained by the observational data. Based on the best fitted parameters in both original and new agegraphic dark energy scenarios, the model is tested by Sne Ia data. The tachyon potential and tachyon field are reconstructed and coincidence problem is revisited.

11 pages, 10 figures. Published in PLB (contains some changes in the text with respect to the first version); arXiv admin note: text overlap with arXiv:1106.2659 by same authors

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Cited by in corpus (11)

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• Agegraphic dark energy: growth index and cosmological implications
• Interacting tachyonic scalar field
• Logamediate Inflation by Tachyon Field
• Interacting Agegraphic Dark Energy Model in DGP Braneworld Cosmology: Dynamical System Approach
• Action functional of the Cardassian universe
• Dynamical System Analysis of Randall-Sundrum Model with Tachyon Field on the Brane
• The Stability Analysis of Brane Induced Gravity with Quintessence Field on the Brane with a Gaussian Potential
• Generalized Second Law of Thermodynamics with Corrected Entropy in Tachyon Cosmology
• Agegraphic dark energy from entropy of the anti-de Sitter black hole