Hidden past of dark energy cosmological models

被引：37
|
作者：
Fernandez-Jambrina, L. [1 ]
机构：
[1] Univ Politecn Madrid, ETSI Navales, E-28040 Madrid, Spain
来源：
PHYSICS LETTERS B | 2007年 / 656卷 / 1-3期
关键词：
D O I：
10.1016/j.physletb.2007.08.091
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
In this Letter we analyse the possibility of having homogeneous isotropic cosmological models with observers reaching t = infinity in finite proper time. It is shown that just observationally-suggested dark energy models with w epsilon (-5/3, -1) show this feature and that they are endowed with an exotic curvature singularity. Furthermore, it is shown that non-accelerated observers in these models may experience a duration of the universe as short as desired by increasing their linear momentum. A subdivision of phantom models in two families according to this behavior is suggested. (c) 2007 Elsevier B.V. All rights reserved.
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收藏
页码：9 / 14
页数：6
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