Dark Energy Model with Spinor Matter and Its Quintom Scenario

Details Dark Energy Model with Spinor Matter and Its Quintom Scenario Dark Energy Model with Spinor Matter and Its Quintom Scenario

2008-06-24

arxiv.org/abs/0806.3890v2

Class.Quant.Grav.25:165014,2008

Physics

High Energy Physics

High Energy Physics - Theory

20 pages, 5 figures, accepted by CQG, several references added

Scientific paper

10.1088/0264-9381/25/16/165014

A class of dynamical dark energy models, dubbed Spinor Quintom, can be constructed by a spinor field $\psi$ with a nontraditional potential. We find that, if choosing suitable potential, this model is able to allow the equation-of-state to cross the cosmological constant boundary without introducing any ghost fields. In a further investigation, we show that this model is able to mimic a perfect fluid of Chaplygin gas with $p=-c/\rho$ during the evolution, and also realizes the Quintom scenario with its equation-of-state across -1.

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