Interacting Ricci-like holographic dark energy

TL;DR

This paper investigates a holographic Ricci-like dark energy model with interacting dark matter, showing that the interaction can change sign over cosmic time, and fits observational supernova data well.

Contribution

It introduces a flexible interaction function in a holographic dark energy model without assuming a specific form, and demonstrates its compatibility with supernova observations.

Findings

Interaction function can change sign during evolution

Model parameters fit supernova data well

Results are consistent with observable universe

Abstract

In a flat Friedmann-Lema\^itre-Robertson-Walker background, a scheme of dark matter-dark energy interaction is studied considering a holographic Ricci-like model for the dark energy. Without giving a priori some specific model for the interaction function, we show that this function can experience a change of sign during the cosmic evolution. The parameters involved in the holographic model are adjusted with Supernova data and we obtained results compatible with the observable universe.