Quintom dark energy models with nearly flat potentials

M. R. Setare; E. N. Saridakis

doi:10.1103/physrevd.79.043005

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arXiv · 0810.4775

Quintom dark energy models with nearly flat potentials

M. R. Setare·E. N. Saridakis

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Abstract

We examine quintom dark energy models, produced by the combined consideration of a canonical and a phantom field, with nearly flat potentials and dark energy equation-of-state parameter $w_{DE}$ close to -1. We find that all such models converge to a single expression for $w_{DE}(z)$, depending only on the initial field values and their derivatives. We show that this quintom paradigm allows for a description of the transition through -1 in the near cosmological past. In addition, we provide the necessary conditions for the determination of the direction of the -1-crossing.

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M. R. Setare, E. N. Saridakis. 2009-01-30. Quintom dark energy models with nearly flat potentials. https://doi.org/10.1103/physrevd.79.043005

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