Cosmological Evolution of Quintessence and Phantom with a New Type of Interaction in Dark Sector
General Relativity and Quantum Cosmology
2011-01-21 v3 Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory
Abstract
In the present work, motivated by the work of Cai and Su [Phys. Rev. D {\bf 81}, 103514 (2010)], we propose a new type of interaction in dark sector, which can change its sign when our universe changes from deceleration to acceleration. We consider the cosmological evolution of quintessence and phantom with this type of interaction, and find that there are some scaling attractors which can help to alleviate the cosmological coincidence problem. Our results also show that this new type of interaction can bring new features to cosmology.
Keywords
Cite
@article{arxiv.1008.4968,
title = {Cosmological Evolution of Quintessence and Phantom with a New Type of Interaction in Dark Sector},
author = {Hao Wei},
journal= {arXiv preprint arXiv:1008.4968},
year = {2011}
}
Comments
11 pages, 6 tables, revtex4; v2: Nucl. Phys. B in press; v3: published version