Time variable cosmological constants from the age of universe
Time variable cosmological constants from the age of universe
复制标题
宇宙年龄的时间变量宇宙学常数
DOI:
10.1016/j.physletb.2010.05.058
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发表时间:
2009-05
影响因子:
4.4
通讯作者:
Lu, Jianbo
中科院分区:
文献类型:
--
作者:
Xu, Lixin;Li, Wenbo;Lu, Jianbo
In this Letter, time variable cosmological constant, dubbed age cosmological constant, is investigated motivated by the fact: any cosmological length scale and time scale can introduce a cosmological constant or vacuum energy density into Einstein's theory. The age cosmological constant takes the form ρΛ=3c2MP2/tΛ2, where tΛis the age or conformal age of our universe. The effective equation of state (EoS) of age cosmological constant are wΛeff=−1+23ΩΛc and wΛeff=−1+23ΩΛc(1+z) when the age and conformal age of universe are taken as the role of cosmological time scales respectively. The EoS are the same as the so-called agegraphic dark energy models. However, the evolution histories are different from the agegraphic ones for their different evolution equations.
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DOI:
10.1140/epjc/s10052-008-0858-1
发表时间:
2008-04
期刊:
The European Physical Journal C
影响因子:
--
作者:
Lixin Xu;Wenbo Li;Jianbo Lu
通讯作者:
Lixin Xu;Wenbo Li;Jianbo Lu
影响因子:
5
作者:
Bo Hu;Yi Ling
通讯作者:
Bo Hu;Yi Ling
DOI:
10.1086/382125
发表时间:
2003-10
期刊:
The Astrophysical Journal
影响因子:
--
作者:
M. Tegmark;M. Blanton;M. Strauss;F. Hoyle;D. Schlegel;R. Scoccimarro;M. Vogeley;D. Weinberg
通讯作者:
M. Tegmark;M. Blanton;M. Strauss;F. Hoyle;D. Schlegel;R. Scoccimarro;M. Vogeley;D. Weinberg
影响因子:
6.4
作者:
H. M. Sadjadi
通讯作者:
H. M. Sadjadi
影响因子:
4.4
作者:
Li, M
通讯作者:
Li, M