Cosmological bounds on oscillating dark energy models

被引：14
|
作者：
Jain, Deepak [1 ]
Dev, Abha
Alcaniz, J. S.
机构：
[1] Univ Delhi, Deen Dayal Upadhyaya Coll, New Delhi 110015, India
[2] Univ Delhi, Miranda House, Delhi 110007, India
[3] Observ Nacl, Dept Astron, BR-20921400 Rio De Janeiro, Brazil
来源：
PHYSICS LETTERS B | 2007年 / 656卷 / 1-3期
关键词：
D O I：
10.1016/j.physletb.2007.09.023
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study the cosmological constraints on the two purely phenomenological models of oscillating dark energy. In these oscillating models, the equation of state of dark energy varies periodically. The periodic equation of state may provide the natural way to unify the early acceleration (inflation) and the late time acceleration of the Universe. These models give the effective way to tackle the cosmic coincidence problem. We examine the observational constraints on the oscillatory models from the latest observational data including the gold sample of 182 SNe type la, the shift parameter, R, given by the WMAP and the BAO measurements from the SDSS. (c) 2007 Elsevier B.V. All tights reserved.
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页码：15 / 18
页数：4
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