Non-minimally coupled canonical, phantom and quintom models of holographic dark energy

TL;DR

This paper explores non-minimally coupled canonical, phantom, and quintom holographic dark energy models, analyzing their cosmological implications, including the equation-of-state parameter and future singularities, with results consistent with observations.

Contribution

It introduces a classification of non-minimally coupled holographic dark energy models and examines their cosmological behaviors and observational viability.

Findings

Models can cross the phantom divide.

Conditions for future singularities are identified.

Models align with current observational data.

Abstract

We investigate canonical, phantom and quintom models, with the various fields being non-minimally coupled to gravity, in the framework of holographic dark energy. We classify them and we discuss their cosmological implications. In particular, we examine the present value of the dark energy equation-of-state parameter and the crossing through the phantom divide, and we extract the conditions for a future cosmological singularity. The combined scenarios are in agreement with observations and reveal interesting cosmological behaviors.