Notes on interacting holographic dark energy model in a closed universe

TL;DR

This paper explores an interacting holographic dark energy model within a closed universe, analyzing its effects on cosmic acceleration, curvature, and conditions for crossing the phantom divide line.

Contribution

It introduces conditions for phantom divide crossing in a closed universe holographic dark energy model, extending previous flat universe analyses.

Findings

Curvature parameter behavior in accelerated expansion

Conditions for crossing the phantom divide line

Impact of interaction on dark energy dynamics

Abstract

We consider interacting holographic dark energy model in Friedmann Robertson Walker space time with positive spatial curvature and investigate the behavior of curvature parameter and dark energy density in accelerated expanding epoch. We also derive some conditions needed to cross the phantom divide line in this model.