Interacting two-fluid viscous dark energy models in a non-flat universe

被引：19
|
作者：
Amirhashchi, Hassan [1 ]
Pradhan, Anirudh [2 ]
Zainuddin, Hishamuddin [3 ]
机构：
[1] Islamic Azad Univ, Mahshahr Branch, Mahshahr, Iran
[2] Hindu Postgrad Coll, Dept Math, Zamania 232331, Ghazipur, India
[3] Univ Putra Malaysia, Inst Math Res, Lab Computat Sci & Math Phys, Serdang 43400, Selangor De, Malaysia
来源：
RESEARCH IN ASTRONOMY AND ASTROPHYSICS | 2013年 / 13卷 / 02期
关键词：
cosmology: theory; dark energy; viscous fluid; HUBBLE-SPACE-TELESCOPE; EQUATION-OF-STATE; PROBE WMAP OBSERVATIONS; COSMOLOGICAL PARAMETERS; ACCELERATING UNIVERSE; ANGULAR SCALES; FRW COSMOLOGY; IA SUPERNOVAE; ANISOTROPY; DECELERATION;
D O I：
10.1088/1674-4527/13/2/001
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the evolution of the dark energy parameter within the scope of a spatially non-flat and isotropic Friedmann-Robertson-Walker model filled with barotropic fluid and bulk viscous stresses. We have obtained cosmological solutions that do not have a Big Rip singularity, and concluded that in both non-interacting and interacting cases the non-flat open Universe crosses the phantom region. We find that during the evolution of the Universe, the equation of state for dark energy omega(D) changes from omega(eff)(D) > -1 to omega(eff)(D) < -1, which is consistent with recent observations.
引用
收藏
页码：129 / 138
页数：10
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