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arxiv: 1106.0091 · v2 · pith:IP4I4JZQnew · submitted 2011-06-01 · 🌀 gr-qc

A new approach in stability analysis: case study: tachyon cosmology with non-minimally coupled scalar field-matter

H. Farajollahi , A. Salehi This is my paper
classification 🌀 gr-qc
keywords coupledgeneralmodelnon-minimallyscalarstabilityanalysisanalytic
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We study the general properties of attractors in a cosmological model with tachyonic potential and a scalar field non-minimally coupled to matter. A general analytic formulation is given to derive fixed points with a discussion on their stability. We also check the consistency of the model by fitting it to the supernovae type Ia data.

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    Accelerating scaling attractors where DM and barotropic fluid coexist at late times arise only for DM-density-controlled interactions with energy transfer from DM.