Holographic dark energy interacting with dark matter in a Closed Universe

TL;DR

This paper investigates a cosmological model where holographic dark energy interacts with dark matter via a decaying term, analyzing constraints for accelerated expansion and exploring phantom scenarios without specific dark energy equations of state.

Contribution

It introduces a new interacting holographic dark energy model with a decaying interaction term and derives parameter constraints for accelerated expansion.

Findings

Constraints on model parameters for accelerated expansion

Existence of phantom scenarios without specific dark energy equations

Discussion of dark energy equation of state behavior

Abstract

A cosmological model of an holographic dark energy interacting with dark matter throughout a decaying term of the form $Q=3(\lambda_1\rho_{DE} + \lambda_2\rho_m) H$ is investigated. General constraint on the parameters of the model are found when accelerated expansion is imposed and we found a phantom scenarios, without any reference to a specific equation of state for the dark energy. The behavior of equation of stated for dark energy is also discussed.