Abstract
The statefinder diagnostic and w–w′ analysis are useful methods for distinguishing different dark energy models. In this paper, we study the agegraphic dark energy (ADE) model with the sign-changeable interaction by using the statefinder diagnostic and w–w′ analysis. The evolution trajectories of this model in the r–s and w–w′ planes are plotted for different model parameters. It is shown that the model parameters significantly affect the evolution trajectories in the r–s and w–w′ planes. Furthermore, we can differentiate the ADE model with the sign-changeable interaction from the LCDM model by means of the statefinder diagnostic and w–w′ analysis.
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This work is partially supported by Natural Science Foundation of Jiangsu Province under Grant No. BK2011397.
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Xu, Y.D., Huang, Z.G. Statefinder diagnostic and w–w′ analysis for the agegraphic dark energy model with the sign-changeable interaction. Astrophys Space Sci 346, 525–529 (2013). https://doi.org/10.1007/s10509-013-1457-7
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DOI: https://doi.org/10.1007/s10509-013-1457-7