Interacting holographic dark energy models: a general approach

被引：10
作者：
Som, S. [1 ,2 ]
Sil, A. [1 ,3 ]
机构：
[1] Jadavpur Univ, Dept Phys, Relat & Cosmol Res Ctr, Kolkata 700032, India
[2] Meghnad Saha Inst Technol, Kolkata 700107, India
[3] St Pauls CM Coll, Kolkata 700009, India
来源：
ASTROPHYSICS AND SPACE SCIENCE | 2014年 / 352卷 / 02期
关键词：
Holographic principle; Phantom barrier; Holographic Ricci dark energy; Varying Lambda; PROBE WMAP OBSERVATIONS; LARGE-SCALE STRUCTURE; COSMOLOGICAL CONSTANT; BLACK-HOLES; ANISOTROPY; QUINTESSENCE; COINCIDENCE; CONSTRAINTS; INFLATION; DYNAMICS;
D O I：
10.1007/s10509-014-1926-7
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
Dark energy models inspired by the cosmological holographic principle are studied in homogeneous isotropic spacetime with a general choice for the dark energy density . Special choices of the parameters enable us to obtain three different holographic models, including the holographic Ricci dark energy (RDE) model. Effect of interaction between dark matter and dark energy on the dynamics of those models are investigated for different popular forms of interaction. It is found that crossing of phantom divide can be avoided in RDE models for beta > 0.5 irrespective of the presence of interaction. A choice of alpha=1 and beta=2/3 leads to a varying I >-like model introducing an IR cutoff length I > (-1/2). It is concluded that among the popular choices an interaction of the form QaeH rho (m) suits the best in avoiding the coincidence problem in this model.
引用
收藏
页码：867 / 875
页数：9
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