Restoring Holographic Dark Energy in Brane Cosmology

TL;DR

This paper explores a generalized holographic dark energy model within brane cosmology, showing how bulk effects influence the effective 4D dark energy and can lead to different cosmological behaviors.

Contribution

It introduces a generalized holographic dark energy framework in brane cosmology, highlighting the impact of bulk effects on the effective 4D dark energy.

Findings

In the low energy limit, the model aligns with conventional 4D predictions.

Finite bulk effects can significantly alter dark energy behavior.

The approach bridges holographic principles with brane cosmology.

Abstract

We present a generalized version of holographic dark energy arguing that it must be considered in the maximally subspace of a cosmological model. In the context of brane cosmology it leads to a bulk holographic dark energy which transfers its holographic nature to the effective 4D dark energy. As an application we use a single-brane model and we show that in the low energy limit the behavior of the effective holographic dark energy coincides with that predicted by conventional 4D calculations. However, a finite bulk can lead to radically different results.