# Agegraphic dark energy from entropy of the anti-de Sitter black hole

## TL;DR

This paper explores an agegraphic dark energy model derived from anti-de Sitter black hole entropy, constrained by supernova and Hubble data, showing it closely resembles but can be distinguished from the standard Lambda-CDM model.

## Contribution

It introduces a novel agegraphic dark energy model based on anti-de Sitter black hole entropy and constrains its parameters using observational data.

## Key findings

- The model fits observational data well.
- It predicts a universe evolution including late-time acceleration.
- Late-time deviations from Lambda-CDM can be distinguished via statefinder analysis.

## Abstract

In this paper, we analyze the agegraphic dark energy from the entropy of the anti-de Sitter black hole using the age of the universe as the IR cutoff. We constrain its parameter with the Pantheon+ Type Ia supernova sample and observational Hubble parameter data, finding that the Akaike Information Criterion cannot effectively distinguish this model from the standard $\Lambda$CDM model. The present value of Hubble constant $H_{0}$ and the model parameter $b^{2}$ are constrained to $H_{0}=67.7 \pm 1.8$ and $b^{2}=0.303^{+0.019}_{-0.024}$. This model realizes the whole evolution of the universe, including the late-time accelerated expansion. Although it asymptotically approaches the standard $\Lambda$CDM model in the future, statefinder analysis shows that late-time deviations allow the two models to be distinguished.