Key points are not available for this paper at this time.
In light of a recent study on the dark energy models that manifest an equation of state w<-1, we investigate the cosmological evolution of a phantom field in a specific potential, exponential potential in this paper. The phase plane analysis shows that the there is a late time attractor solution in this model, which addresses similar issues to that of fine-tuning problems in conventional quintessence models. The evolution of the state w is determined by the attractor solution which is dependent on the parameter in the potential. We also show that this model is stable for our present observable universe.
Hao et al. (Tue,) studied this question.