Statefinder diagnostic and w-w′ analysis for the agegraphic dark energy model with the sign-changeable interaction

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.