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Fuzzy Dark Matter from Clockwork Axion Model

Title
Fuzzy Dark Matter from Clockwork Axion Model
Authors
Bae K.J.Gong J.-O.
Ewha Authors
공진욱
SCOPUS Author ID
공진욱scopus
Issue Date
2020
Journal Title
Journal of the Korean Physical Society
ISSN
0374-4884JCR Link
Citation
Journal of the Korean Physical Society vol. 77, no. 12, pp. 1107 - 1112
Keywords
AxionClockworkDark matterFuzzy dark matter
Publisher
Korean Physical Society
Indexed
SCIE; SCOPUS; KCI WOS scopus
Document Type
Article
Abstract
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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DOI
10.3938/jkps.77.1107
Appears in Collections:
사범대학 > 과학교육과 > Journal papers
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