Dark Energy Model with Spinor Matter and Its Quintom Scenario
Abstract
A class of dynamical dark energy models, dubbed Spinor Quintom, can be constructed by a spinor field 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/ during the evolution, and also realizes the Quintom scenario with its equation-of-state across -1.
0