Attractor Solution of Phantom Field

Abstract

In light of recent study on the dark energy models that manifest an equation of state $w<-1$, we investigate the cosmological evolution of phantom field in a specific potential, exponential potential in this paper. The phase plane analysis show that the there is a late time attractor solution in this model, which address the similar issues as that of fine tuning problems in conventional quintessence models. The equation of state $w$ is determined by the attractor solution which is dependent on the $\lambda$ parameter in the potential. We also show that this model is stable for our present observable universe.

9 pages, 3 ps figures; typos corrected, references updated, this is the final version to match the published version

References in corpus (3)

• Reconstructing the Equation of State of Tachyon
• Phantom Matter and the Cosmological Constant
• Stability Issues for w < -1 Dark Energy

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