Dark radiation emerging after big bang nucleosynthesis?

被引：69

作者：

Fischler, Willy ^{[1
]}

Meyers, Joel

机构：

[1] Univ Texas Austin, Dept Phys, Theory Grp, Austin, TX 78712 USA

来源：

PHYSICAL REVIEW D | 2011年 / 83卷 / 06期

基金：

美国国家科学基金会;

关键词：

DYNAMICAL SUPERSYMMETRY BREAKING; PRIMORDIAL NUCLEOSYNTHESIS; DECAYING PARTICLES;

D O I：

10.1103/PhysRevD.83.063520

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We show how recent data from observations of the cosmic microwave background may suggest the presence of additional radiation density which appeared after big bang nucleosynthesis. We propose a general scheme by which this radiation could be produced from the decay of nonrelativistic matter, we place constraints on the properties of such matter, and we give specific examples of scenarios in which this general scheme may be realized.

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