期刊
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
卷 -, 期 2, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1475-7516/2014/02/046
关键词
dark matter theory; axions; physics of the early universe
资金
- JSPS [24740135]
- Inoue Foundation for Science
- World Premier International Center Initiative (WPI Program), MEXT, Japan
- [24111702]
- [21111006]
- [23104008]
- [22244030]
- [21244033]
- [25400248]
- Grants-in-Aid for Scientific Research [24111702, 22244030, 24740135, 21111006] Funding Source: KAKEN
The presence of a hot dark matter component has been hinted at 3 sigma by a combination of the results from different cosmological observations. We examine a possibility that pseudo Nambu-Goldstone bosons account for both hot and cold dark matter components. We show that the QCD axions can do the job for the axion decay constant f(a) less than or similar to O (10(10)) GeV, if they are produced by the saxion decay and the domain wall annihilation. We also investigate the cases of thermal QCD axions, pseudo Nambu-Goldstone bosons coupled to the standard model sector through the Higgs portal, and axions produced by modulus decay.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据