Reexamining generalized Chaplygin gas with the sign-changeable interaction

Abstract

In this paper, we reexamine the generalized Chaplygin gas (GCG) cosmology with the sign-changeable interaction. The dynamical analysis show that there exists de-Sitter attractors in this model, which means that the late-time behaviors of the model is insensitive to the initial condition and thus alleviates the coincidence problem. Furthermore, we find that this interaction oscillates and tends to zero finally by numerical calculations of the nonlinear equations. In some specific cases of initial conditions, the interaction is positive (the energy transition from dark energy to dark matter) at high redshift while it is negative (the energy transition from dark matter to dark energy) at low redshift for suitable ranges of the parameters.

6 pages, 7figures

References in corpus (3)

• Indications of a late-time interaction in the dark sector
• Cosmological Evolution of Quintessence and Phantom with a New Type of Interaction in Dark Sector
• Redshift drift exploration for interacting dark energy

Cited by in corpus (4)

• Dynamical systems applied to cosmology: dark energy and modified gravity
• Probing the sign-changeable interaction between dark energy and dark matter with current observations
• Effects of Anisotropy on the Sign-Changeable Interacting Tsallis Holographic Dark Energy
• Ghost dark energy with sign-changeable interaction term