Asymptotic behavior of w in general quintom model

Abstract

For the quintom models with arbitrary potential $V=V(\varphi ,\sigma )$, the asymptotic value of equation of state parameter w is obtained by a new method. In this method, w of stable attractors are calculated by using the ratio (d ln V)/(d ln a) in asymptotic region. All the known results, have been obtained by other methods, are reproduced by this method as specific examples.

8 pages, one example is added, accepted for publication in Gen. Rel. Grav

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• Internal space structure generalization of the quintom cosmological scenario
• The past and future dynamics of quintom dark energy models
• Phantom-Like Behavior in $f(R)$-Gravity
• A Non-minimally Coupled Quintom Dark Energy Model on the Warped DGP Brane
• Cosmological Evolution of Dirac-Born-Infeld Field
• The phase-space of generalized Gauss-Bonnet dark energy
• Chameleon Cosmology Model Describing the Phantom Divide Line Crossing
• Stability analysis of the cosmological solutions with induced gravity and scalar field on the brane
• Multi-fluid cosmology in Einstein gravity: analytical solutions
• Phantom without phantom or how the PT symmetry saves us from the Big Rip
• Remarks on generalized scalar-tensor models of dark energy
• Dynamics of Mixed Dark Energy Domination in Teleparallel Gravity and Phase-Space Analysis
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• Coupling q-deformed dark energy to dark matter
• Interacting dark matter and q-deformed dark energy non-minimally coupled to gravity