Holographic inflation and holographic dark energy from entropy of the anti-de Sitter black hole

TL;DR

This paper explores a holographic dark energy model derived from anti-de Sitter black hole entropy, analyzing its implications for inflation, reheating, and its similarity to the standard cosmological model.

Contribution

It investigates holographic inflation using the Hubble horizon as IR cutoff, identifying conditions under which it aligns with observational data and behaves like the standard model.

Findings

Slow-roll inflation with specific potentials fits Planck data.

Reheating temperature and e-folds favor certain potential parameters.

Model can mimic the standard $\\Lambda$CDM$\ when a parameter is small.

Abstract

Based on the entropy of anti-de Sitter black hole, a new holographic dark energy model has been proposed. When the Hubble horizon and particle horizon are chosen as the IR cutoff, the late-time accelerated expansion of universe is realized. In this paper, we consider the Hubble horizon as the IR cutoff to investigate holographic inflation and slow-roll inflation in this model. We find that slow-roll inflation with the chaotic potential $V_{0}\phi^{n}$ is favored by Planck results for some special cases, such as $n=1/3$ and $n=1/2$, while holographic inflation is not supported by Planck results. Then, we analyze the reheating temperature and the number of reheating e-folds in this model, and we find that the results favor the cases $n=1/3$ and $n=1/2$. Finally, we use the dynamical analysis method, statefinder diagnostic pairs, and the Hubble diagram to analyze this model. Our results indicate that when $b^{2}$ takes a small value, this model cannot be distinguished from the standard $\Lambda$CDM model and can serve as an alternative to it.