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

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 $\hat{I}›$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 $b^2=0.303_{-0.024}^{+0.019}$. This model realizes the whole evolution of the universe, including the late-time accelerated expansion. Although it asymptotically approaches the standard $\hat{I}›$CDM model in the future, statefinder analysis shows that late-time deviations allow the two models to be distinguished.