Transition from quintessence to phantom phase in quintom model

Details Transition from quintessence to phantom phase in quintom model Transition from quintessence to phantom phase in quintom model

2006-05-29

arxiv.org/abs/gr-qc/0605143v2

Phys.Rev. D74 (2006) 043506

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

LaTeX, 19 pages, four figures, some minor changes in Introduction, two figures added and the references updated, accepted for

Scientific paper

10.1103/PhysRevD.74.043506

Assuming the Hubble parameter is a continuous and differentiable function of comoving time, we investigate necessary conditions for quintessence to phantom phase transition in quintom model. For power-law and exponential potential examples, we study the behavior of dynamical dark energy fields and Hubble parameter near the transition time, and show that the phantom-divide-line w=-1 is crossed in these models.

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