摘要
We apply two geometrical diagnostics, the statefinder {s, r} and Om（x）, to discriminate the Spatial Ricci scalar dark energy model from the ACDM model. We plot the evolution trajectories of those models in the statefinder plane and Om（x） plane. We show that the Spatial Ricci scalar dark energy model can be distinguished from the ACDM model at 68.3% confidence level for z ≤ 1.
We apply two geometrical diagnostics,the statefinder {s,r} and Om(x),to discriminate the Spatial Ricci scalar dark energy model from the ΛCDM model.We plot the evolution trajectories of those models in the statefinder plane and Om(x) plane.We show that the Spatial Ricci scalar dark energy model can be distinguished from the ΛCDM model at 68.3% confidence level for z 1.
基金
supported in part by the National Natural Science Foundation of China (Grant No. 11147028)
the Hebei Provincial Natural Science Foundation of China (Grant No. A2011201147)
the Research Fund for Doctoral Programs of Hebei University (Grant No. 2009-155)
