AGEGRAPHIC DARK ENERGY MODEL IN THE NON-FLAT UNIVERSE: STATEFINDER DIAGNOSTIC AND omega-omega ' ANALYSIS

作者：Malekjani M^*; Khodam Mohammadi A

来源：International Journal of Modern Physics D, 2010, 19(11): 1857-1871.

DOI：10.1142/S0218271810018086

• Dark energy
• agegraphic model
• statefinder diagnostic

We study the interacting agegraphic dark energy (ADE) model in the non-flat universe by means of the statefinder diagnostic and an w-w' analysis. First, the evolution of EoS parameter (w(d)) and deceleration parameter (q) are calculated in terms of scale-factor for interacting ADE models in the non-flat universe. The dependency of w(d) on the ADE model parameters n and alpha in different spatial curvatures is investigated. We show that the evolution of q is dependent on the type of spatial curvature, besides dependening on parameters n and alpha. The accelerated expansion takes place sooner in the open universe and latter in the closed universe as compared with the flat universe. Then, we plot the evolutionary trajectories of the interacting ADE models for different values of the parameters n and alpha, as well as for different contributions of spatial curvature, in the plane of statefinder parameters. In addition to the statefinder, we also investigate the ADE model in the non-flat universe with w-w' analysis.

• 出版日期2010-9