Statefinder diagnosis in a non-flat universe and the holographic model of dark energy

Details Statefinder diagnosis in a non-flat universe and the holographic model of dark energy Statefinder diagnosis in a non-flat universe and the holographic model of dark energy

2006-11-15

arxiv.org/abs/gr-qc/0611084v5

JCAP 0703:007,2007

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

16 pages, 4 figures; final version

Scientific paper

10.1088/1475-7516/2007/03/007

In this paper, we study the holographic dark energy model in non-flat universe from the statefinder viewpoint. We plot the evolutionary trajectories of the holographic dark energy model for different values of the parameter $c$ as well as for different contributions of spatial curvature, in the statefinder parameter-planes. The statefinder diagrams characterize the properties of the holographic dark energy and show the discrimination between this scenario and other dark energy models. As we show, the contributions of the spatial curvature in the model can be diagnosed out explicitly by the statefinder diagrams. Furthermore, we also investigate the holographic dark energy model in the $w-w'$ plane, which can provide us with a useful dynamical diagnosis complement to the statefinder geometrical diagnosis.

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