Fuzzy Dark Matter from Clockwork Axion Model
- 주제(키워드) Axion , Clockwork , Dark matter , Fuzzy dark matter
- 등재 SCIE, SCOPUS, KCI등재
- 발행기관 Korean Physical Society
- 발행년도 2020
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000174851
- 본문언어 영어
- Published As http://dx.doi.org/10.3938/jkps.77.1107
초록/요약
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. © 2020, The Korean Physical Society.
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