Nonthermal "WIMP miracle''

被引：144

作者：

Acharya, Bobby Samir ^{[1
,2
]}

Kane, Gordon ^{[3
]}

Watson, Scott ^{[3
]}

Kumar, Piyush ^{[4
,5
]}

机构：

[1] Abdus Salam Int Ctr Theoret Phys, Trieste, Italy

[2] Ist Nazl Fis Nucl, Sez Trieste, Milan, Italy

[3] Michigan Ctr Theoret Phys, Ann Arbor, MI USA

[4] Univ Calif Berkeley, Berkeley Ctr Theoret Phys, Berkeley, CA 94720 USA

[5] Univ Calif Berkeley, Lawrence Berkeley Lab, Theoret Phys Grp, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW D | 2009年 / 80卷 / 08期

关键词：

COSMOLOGICAL GRAVITINO REGENERATION; DARK-MATTER; SUPERSYMMETRY; SUPERGRAVITY; DILATION; POLONYI; DECAY;

D O I：

10.1103/PhysRevD.80.083529

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Light scalar fields with only gravitational strength couplings are typically present in UV complete theories of physics beyond the standard model. In the early universe it is natural for these fields to dominate the energy density, and their subsequent decay-if prior to big bang nucleosynthesis-will typically yield some dark matter particles in their decay products. In this paper we make the observation that a Nonthermal "WIMP Miracle'' may result: that is, in the simplest solution to the cosmological moduli problem, nonthermally produced WIMPs can naturally account for the observed dark matter relic density.

引用

页数：6

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