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 wD=−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.
Highlights
The dark energy problem constitute a major puzzle of modern cosmology
There is a wide consensus among cosmologists that the universe has entered a phase of accelerated expansion likely driven by dark energy
In this regard, based on the uncertainty relation of quantum mechanics together with the gravitational effect in general relativity, Cai proposed an agegraphic dark energy model to explain the acceleration of the cosmic expansion [15]
Summary
The dark energy problem constitute a major puzzle of modern cosmology. A great variety of cosmological observations suggest that our universe is currently undergoing a phase of accelerated expansion likely driven by some unknown energy component whose main feature is to possess a negative pressure [1]. Given the unknown nature of both dark matter and dark energy there is nothing in principle against their mutual interaction and it seems very special that these two major components in the universe are entirely independent This possibility is receiving growing attention in the literature [24, 25] (see [26, 27] and references therein) and appears to be compatible with SNIa and CMB data [28]. In this Letter, we would like to generalize, following [13], the agegraphic dark energy models to the universe with spacial curvature in the presence of interaction between the dark matter and dark energy.
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