Revisiting the Cosmological Constraints on the Interacting Dark Energy Models

Details Revisiting the Cosmological Constraints on the Interacting Dark Energy Models Revisiting the Cosmological Constraints on the Interacting Dark Energy Models

2010-04-04

arxiv.org/abs/1004.0492v3

Phys.Lett.B691:173-182,2010

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

15 pages, 1 table, 6 figures, revtex4; v2: discussions added, Phys. Lett. B in press; v3: published version

Scientific paper

10.1016/j.physletb.2010.06.038

In this work, we consider the cosmological constraints on the interacting dark energy models. We generalize the models considered previously by Guo {\it et al.}, Costa and Alcaniz, and try to discuss two general types of models: type I models are characterized by $\rho_{_X}/\rho_m=f(a)$ and $f(a)$ can be any function of scale factor $a$, whereas type II models are characterized by $\rho_m=\rho_{m0}\,a^{-3+\epsilon(a)}$ and $\epsilon(a)$ can be any function of $a$. We obtain the cosmological constraints on the type I and II models with power-law, CPL-like, logarithmic $f(a)$ and $\epsilon(a)$ by using the latest observational data.

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