2006/10/31 by H. Mohseni Sadjadi, M. Alimohammadi · 1 citation
Physics and Astronomy · #gr-qc #astro-ph #hep-th
paper · pdf · doi:10.1103/physrevd.74.103007
published as Phys.Rev.D74:103007,2006 · 15 pages, LaTeX. Some minor explanations are added. To be published in Phys. Rev. D
arxiv created 2006/11/18 · arxiv updated 2009/12/01
An interacting dark energy model with interaction term Q= λm Hρm+λdHρd is considered. By studying the model near the transition time, in which the system crosses the w=-1 phantom-divide-line, the conditions needed to overcome the coincidence problem is investigated. The phantom model, as a candidate for dark energy, is considered and for two specific examples, the quadratic and exponential phantom potentials, it is shown that it is possible the system crosses the w=-1 line, meanwhile the coincidence problem is alleviated, the two facts that have root in observations.