Cosmic behavior, statefinder diagnostic and w−w′ analysis for interacting new agegraphic dark energy model in non-flat universe

摘要

We investigate the interacting NADE model in non-flat universe. The effects of spatial curvature Ω _k , interaction coefficient α and the main parameter of NADE, n, on EoS parameter w _d and deceleration parameter q are studied. We obtain a minimum value for n in both early and present time, in order to that our DE model crosses the phantom divide. Also in a closed universe, changing the sign of q is strongly dependent on α. It has been shown that the quantities w _d and q have a different treatment for various spatial curvature. At last, we calculate the statefinder diagnostic and w−w ′ analysis in non flat universe. In non flat universe, the statefinder trajectories are discriminated by both n and α.