The fate of dark energy

The fate of dark energy
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暗能量的命运

DOI:
10.1016/s0370-2693(03)00208-9
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发表时间:
2002
期刊:
影响因子:
4.4
通讯作者:
Tomo Takahashi
Tomo Takahashi
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
P. Frampton;Tomo Takahashi

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通过对当前宇宙学数据的研究,特别是对CMB、SNeIA和LSS的研究,我们发现,对于暗能量状态方程的简单线性模型,宇宙的未来命运可以在以下两个极端之间变化:(1)尺度因子的发散只有7 Gyr;(2)宇宙的无限寿命,暗能量在未来所有时间占主导地位;(III)暗能量消失,宇宙在t→∞时渐近线到a(t)t 2/3,即,物质支配我们得出了一个可怕的结论,那就是我们过去光锥中的任何数据都无法在这些未来场景中做出选择。
By studying the present cosmological data, particularly on CMB, SNeIA and LSS, we find that the future fate of the universe, for simple linear models of the dark energy equation-of-state, can vary between the extremes of (I) a divergence of the scale factor in as little as 7 Gyr; (II) an infinite lifetime of the universe with dark energy dominant for all future time; (III) a disappearing dark energy where the universe asymptotes as t→∞ to a(t)∼t2/3, i.e., matter domination. Our dreadful conclusion is that no amount of data from our past light-cone can select between these future scenarios.
DOI: 10.1007/bf01877517
发表时间: 1972-01-01
影响因子: 2.4
作者:
HAWKING, SW
通讯作者: HAWKING, SW