Dark energy interacting with dark matter and unparticle

TL;DR

This paper investigates various interacting dark energy models with dark matter and unparticles in flat cosmology, analyzing their stability and late-time behavior to understand acceleration and coincidence problem solutions.

Contribution

It introduces four new interacting dark energy models with dark matter and unparticles and studies their stability and cosmological implications.

Findings

Existence of late-time scaling attractors leading to accelerated expansion

Alleviation of the coincidence problem depends on model parameters

Identification of stable critical points in different interaction scenarios

Abstract

We study dynamical behaviors of the dark energy models interacting with dark matter and unparticle in the standard flat FRW cosmology. We considered four different interacting models and examined the stability of the critical points. We find that there exist late-time scaling attractors corresponding to an accelerating Universe and the alleviation of the coincidence problem depends on the choice of parameters in the models.