Holographic Dark Energy from the Anti-de Sitter Black Hole

TL;DR

This paper proposes a holographic dark energy model derived from the properties of AdS black holes, linking black hole physics with cosmic acceleration and late-time universe expansion without causality issues.

Contribution

It introduces a novel holographic dark energy model based on AdS black hole thermodynamics, connecting negative cosmological constant to dark energy density.

Findings

The model can explain late-time cosmic acceleration.

Horizon choices influence the expansion dynamics.

Potential link between AdS black holes and de Sitter spacetime.

Abstract

The anti-de Sitter (AdS) black hole plays an important role in the holographic principle. In this study, the upper bound in energy corresponding to the mass of the Schwarzschild black hole is modified to be that of the AdS black hole. Via the correspondence between the ultraviolet (UV) and infrared (IR) cutoffs, the constant term in the energy density of the holographic dark energy (HDE) can be obtained from the negative cosmological constant from the black hole. Interestingly, the proposed dark energy model could drive the late-time expansion of the Universe without the causality violation. The cosmic evolution is investigated by choosing the Hubble and particle horizons as the IR length scales. It is found that the accelerated expansion at late time can be obtained for both cases. This result may shed light on the connection between the AdS black hole and the de Sitter (dS) spacetime in the context of cosmology.