Cosmic vector for dark energy

被引：104

作者：

Beltran Jimenez, Jose ^{[1
]}

Maroto, Antonio L. ^{[1
]}

机构：

[1] Univ Complutense Madrid, Dept Fis Teor, E-28040 Madrid, Spain

来源：

PHYSICAL REVIEW D | 2008年 / 78卷 / 06期

关键词：

D O I：

10.1103/PhysRevD.78.063005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In this work we show that the presence of a vector field on cosmological scales could explain the present phase of accelerated expansion of the Universe. The proposed theory contains no dimensional parameters nor potential terms and does not require unnatural initial conditions in the early universe, thus avoiding the so-called cosmic coincidence problem. In addition, it fits the data from high-redshift supernovae with excellent precision, making definite predictions for cosmological parameters. Upcoming observations will be able to clearly discriminate this model from standard cosmology with cosmological constant.

引用

页数：5

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