Interacting Dark Energy and the Cosmic Coincidence Problem

TL;DR

This paper explores how interacting dark energy models can address the cosmic coincidence problem by analyzing stability conditions and providing specific holographic models that exhibit desired evolutionary properties.

Contribution

It introduces conditions for dark energy interactions that lead to stable cosmic evolution and presents holographic models exemplifying these properties.

Findings

Stable attractor solutions for the universe's future evolution.

Holographic dark energy models satisfying stability conditions.

Potential resolution of the cosmic coincidence problem.

Abstract

The introduction of an interaction for dark energy to the standard cosmology offers a potential solution to the cosmic coincidence problem. We examine the conditions on the dark energy density that must be satisfied for this scenario to be realized. Under some general conditions we find a stable attractor for the evolution of the Universe in the future. Holographic conjectures for the dark energy offer some specific examples of models with the desired properties.