Holographic dark energy and late cosmic acceleration

TL;DR

This paper proposes a holographic dark energy model based on the holographic principle, explaining the universe's late acceleration and addressing the coincidence problem, with implications for non-flat cosmologies.

Contribution

It introduces a holographic dark energy model that accounts for cosmic acceleration and alleviates the coincidence problem, extending to non-flat universes.

Findings

The model explains late cosmic acceleration.

It alleviates the coincidence problem.

Comments on a late transition to deceleration.

Abstract

It has been persuasively argued that the number of the effective degrees of freedom of a macroscopic system is proportional to its area rather than to its volume. This entails interesting consequences for cosmology. Here we present a model based on this "holographic principle" that accounts for the present stage of accelerated expansion of the Universe and significantly alleviates the coincidence problem also for non-spatially flat cosmologies. Likewise, we comment on a recently proposed late transition to a fresh decelerated phase.