Interacting Energy Components and Observational Data
arXiv:0704.3330 · doi:10.1016/j.physletb.2007.08.056
Abstract
In this note, we extend our previous work [Phys. Lett. B 644, 7 (2007), astro-ph/0609597], and compare eleven interacting dark energy models with different couplings to the observational data. However, none of these models is better than the simplest CDM model. This implies that either more exotic couplings are needed in the cosmological models with interaction between dark energy and dust matter, or {\em there is no interaction at all}. We consider that this result is disadvantageous to the interacting dark energy models studied extensively in the literature.
15 pages, 5 figures, 3 tables, Latex2e; v2: references added; v3: discussions added, Phys. Lett. B in press; v4: published version
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