Sandage-Loeb test for the new agegraphic and Ricci dark energy models

TL;DR

The paper evaluates how the Sandage-Loeb test can effectively constrain new agegraphic and Ricci dark energy models by directly measuring redshift variations in quasars over a decade.

Contribution

It demonstrates the potential of the SL test to significantly constrain NADE and RDE models within a ten-year observational period.

Findings

SL test can constrain dark energy models with high significance

Ten-year survey sufficient for effective model constraints

Provides a new approach to probe dark energy at high redshifts

Abstract

The Sandage-Loeb (SL) test is a unique method to explore dark energy at the ``redshift desert'' ($2\lesssim z\lesssim 5$), an era not covered by any other dark energy probes, by directly measuring the temporal variation of the redshift of quasar (QSO) Lyman-$\alpha$ absorption lines. In this paper, we study the prospects for constraining the new agegraphic dark energy (NADE) model and the Ricci dark energy (RDE) model with the SL test. We show that, assuming only a ten-year survey, the SL test can constrain these two models with high significance.