Transition from quintessence to phantom phase in quintom model
General Relativity and Quantum Cosmology
2009-11-11 v2 Astrophysics
High Energy Physics - Theory
Abstract
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.
Cite
@article{arxiv.gr-qc/0605143,
title = {Transition from quintessence to phantom phase in quintom model},
author = {H. Mohseni Sadjadi and M. Alimohammadi},
journal= {arXiv preprint arXiv:gr-qc/0605143},
year = {2009}
}
Comments
LaTeX, 19 pages, four figures, some minor changes in Introduction, two figures added and the references updated, accepted for publication in Phys. Rev. D