Statefinder Diagnosis for Ricci Dark Energy

Details Statefinder Diagnosis for Ricci Dark Energy Statefinder Diagnosis for Ricci Dark Energy

2008-09-15

arxiv.org/abs/0809.2502v3

Phys.Lett.B670:231-234,2008

Physics

High Energy Physics

High Energy Physics - Theory

14 pages, 3 figures, v2:minor error corrected in Section II, v3: refs added

Scientific paper

10.1016/j.physletb.2008.11.005

Statefinder diagnostic is a useful method which can differ one dark energy model from each others. In this letter, we apply this method to a holographic dark energy model from Ricci scalar curvature, called the Ricci dark energy model(RDE). We plot the evolutionary trajectories of this model in the statefinder parameter-planes, and it is found that the parameter of this model plays a significant role from the statefinder viewpoint. In a very special case, the statefinder diagnostic fails to discriminate LCDM and RDE models, thus we apply a new diagnostic called the Om diagnostic proposed recently to this model in this case in Appendix A and it works well.

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