Interacting Energy Components and Observational $H(z)$ Data

Details Interacting Energy Components and Observational $H(z)$ Data Interacting Energy Components and Observational $H(z)$ Data

2007-04-25

arxiv.org/abs/0704.3330v4

Phys.Lett.B654:139-147,2007

Astronomy and Astrophysics

Astrophysics

15 pages, 5 figures, 3 tables, Latex2e; v2: references added; v3: discussions added, Phys. Lett. B in press; v4: published ver

Scientific paper

10.1016/j.physletb.2007.08.056

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 $H(z)$ data. However, none of these models is better than the simplest $\Lambda$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.

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