Holographic dark energy with Granda-Oliveros cutoff and ansatz based approach: An extended look

TL;DR

This paper investigates holographic dark energy models with the Granda-Oliveros cutoff using an ansatz approach, comparing different universe expansion scenarios and identifying the logamediate model as the most feasible.

Contribution

It extends holographic dark energy models by incorporating various cutoff schemes and universe expansion forms, providing a comparative analysis of their viability.

Findings

Logamediate models best fit cosmological data

Emergent universe models are second most feasible

Power law models are less feasible

Abstract

Holographic dark energy models have proven to be a very interesting way to study various aspects of late-time acceleration of the universe. In this work we extensively study HDE models with the Granda-Oliveros cutoff with an ansatz based approach. We consider the Tsallis, Barrow and PLEC HDE models in this regard and consdier simple power law, emergent universe, intermediate and logamediate forms of for the universe. Studying various cosmologically interesting parameters alongside the thermodynamical aspects in these models, we show that the Logamediate models are the best fit out of the other possibilites, followed by the emergent universe model, intermediate model and the simple power law models at the very last in terms of feasibility.