Fuzzy Dark Matter from Clockwork Axion Model

被引:0
|
作者
Bae, Kyu Jung [1 ]
Gong, Jinn-Ouk [2 ]
机构
[1] Kyungpook Natl Univ, Dept Phys, Daegu 41566, South Korea
[2] Ewha Womans Univ, Dept Sci Educ, Seoul 03760, South Korea
基金
新加坡国家研究基金会; 日本学术振兴会;
关键词
Axion; Dark matter; Clockwork; Fuzzy dark matter; INVARIANCE; INFLATION; BREAKING; HALO;
D O I
10.3938/jkps.77.1107
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We consider in the clockwork axion model the realization of an ultralight axion which can serve as a fuzzy dark matter candidate. With the mixing terms between adjacent axions, the shift symmetries are broken except for one, which is responsible for the ultralight axion and its mass can be as light as 10(-21) eV. This ultralight axion can satisfy easily the observed dark matter abundance and the isocurvature bound. The heavier axions resulting from the clockwork gears quickly decay before the big bang nucleosynthesis.
引用
收藏
页码:1107 / 1112
页数:6
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