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

被引：36

作者：

Khodam-Mohammadi, A. ^{[1
]}

Malekjani, M. ^{[1
]}

机构：

[1] Bu Ali Sina Univ, Fac Sci, Dept Phys, Hamadan, Iran

来源：

ASTROPHYSICS AND SPACE SCIENCE | 2011年 / 331卷 / 01期

关键词：

Dark energy; New agegraphic model; Statefinder diagnosis; Non-flat universe; PROBE WMAP OBSERVATIONS; COSMOLOGICAL CONSTANT; POWER SPECTRUM; CONSTRAINTS; PARAMETERS; BOOMERANG; RELEASE; MATTER;

D O I：

10.1007/s10509-010-0422-y

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the interacting NADE model in non-flat universe. The effects of spatial curvature Omega(k), interaction coefficient alpha 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 alpha. 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 alpha.

引用

页码：265 / 273

页数：9

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