Cosmological evolution of agegraphic dark energy with the sign-changeable interaction |
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| Authors: | Y D Xu X H Zhai |
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| Institution: | 1. School of Science, Huaihai Institute of Technology, Lianyungang, 222005, China
2. Shanghai United Center for Astrophysics (SUCA), Shanghai Normal University, Shanghai, 200234, China
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| Abstract: | In this paper, we study a cosmological model with the sign-changeable interaction between agegraphic dark energy (ADE) and dark matter. For the accelerated expansion of the universe, the model parameters n and β should satisfy the condition n>1 and $-\frac{2}{3}<\beta<0$ . We also investigate the effect of the parameters n and β on the evolutive behavior of our universe. Furthermore, by analysis it is shown that the equation of state of ADE with the sign-changeable interaction can cross the phantom divide from w d >?1 to w d <?1 for the appropriate n and β. This is different from that of ADE with usual interaction, whose equation of state changes from w d <?1 to w d >?1. |
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