Revisiting the Cosmological Constraints on the Interacting Dark Energy Models

Abstract

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.

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

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• Quasi-Rip: A New Type of Rip Model without Cosmic Doomsday
• Cosmological model of the interaction between dark matter and dark energy
• Dark Energy Cosmology with the Alternative Cosmic Microwave Background Data
• Interacting phantom dark energy: new accelerating scaling attractors
• Testing the phenomenological interacting dark energy model with gamma-ray bursts and Pantheon+ type Ia supernovae
• Studies on dark energy evolution
• Matter production effects and interacting scenario within a reconstructed mimetic cosmology for late times