Interacting agegraphic dark energy models in non-flat universe

TL;DR

This paper extends agegraphic dark energy models to non-flat universes with interacting dark matter and dark energy, demonstrating the models' ability to cross the phantom divide and recover flat universe results.

Contribution

It introduces a generalized agegraphic dark energy framework for curved universes with interaction, allowing for equation of state crossing and unifying flat and curved cases.

Findings

Models can achieve $w_D = -1$ crossing.

Results reduce to flat universe case when curvature is zero.

The framework accommodates spatial curvature and interaction effects.

Abstract

A so-called "agegraphic dark energy" was recently proposed to explain the dark energy-dominated universe. In this Letter, we generalize the agegraphic dark energy models to the universe with spatial curvature in the presence of interaction between dark matter and dark energy. We show that these models can accommodate $w_D = -1 $ crossing for the equation of state of dark energy. In the limiting case of a flat universe, i.e. $k = 0$, all previous results of agegraphic dark energy in flat universe are restored.