Fixed points in interacting dark energy models

TL;DR

This paper investigates the dynamical behaviors of two interacting dark energy models, revealing new accelerated scaling attractors and suggesting that the coincidence problem can be alleviated through parameter choices.

Contribution

It introduces new accelerated scaling attractors in interacting dark energy models, expanding understanding beyond non-interacting quintessence models.

Findings

Discovery of new accelerated scaling attractors

Reduction of the coincidence problem via parameter tuning

Comparison with non-interacting quintessence models

Abstract

The dynamical behaviors of two interacting dark energy models are considered. In addition to the scaling attractors found in the non-interacting quintessence model with exponential potential, new accelerated scaling attractors are also found in the interacting dark energy models. The coincidence problem is reduced to the choice of parameters in the interacting dark energy models.