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Title: QCD Axion Dark Matter with a Small Decay Constant

Abstract

The QCD axion is a good dark matter candidate. The observed dark matter abundance can arise from misalignment or defect mechanisms, which generically require an axion decay constant fa ~ O(1011) GeV (or higher). We introduce a new cosmological origin for axion dark matter, parametric resonance from oscillations of the Peccei-Quinn symmetry breaking field, that requires fa ~ (108–1011) GeV. The axions may be warm enough to give deviations from cold dark matter in large scale structure.

Authors:
; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), High Energy Physics (HEP)
OSTI Identifier:
1438516
Alternate Identifier(s):
OSTI ID: 1461154
Grant/Contract Number:  
AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Name: Physical Review Letters Journal Volume: 120 Journal Issue: 21; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Co, Raymond T., Hall, Lawrence J., and Harigaya, Keisuke. QCD Axion Dark Matter with a Small Decay Constant. United States: N. p., 2018. Web. doi:10.1103/PhysRevLett.120.211602.
Co, Raymond T., Hall, Lawrence J., & Harigaya, Keisuke. QCD Axion Dark Matter with a Small Decay Constant. United States. https://doi.org/10.1103/PhysRevLett.120.211602
Co, Raymond T., Hall, Lawrence J., and Harigaya, Keisuke. Wed . "QCD Axion Dark Matter with a Small Decay Constant". United States. https://doi.org/10.1103/PhysRevLett.120.211602.
@article{osti_1438516,
title = {QCD Axion Dark Matter with a Small Decay Constant},
author = {Co, Raymond T. and Hall, Lawrence J. and Harigaya, Keisuke},
abstractNote = {The QCD axion is a good dark matter candidate. The observed dark matter abundance can arise from misalignment or defect mechanisms, which generically require an axion decay constant fa ~ O(1011) GeV (or higher). We introduce a new cosmological origin for axion dark matter, parametric resonance from oscillations of the Peccei-Quinn symmetry breaking field, that requires fa ~ (108–1011) GeV. The axions may be warm enough to give deviations from cold dark matter in large scale structure.},
doi = {10.1103/PhysRevLett.120.211602},
journal = {Physical Review Letters},
number = 21,
volume = 120,
place = {United States},
year = {Wed May 23 00:00:00 EDT 2018},
month = {Wed May 23 00:00:00 EDT 2018}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1103/PhysRevLett.120.211602

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Cited by: 52 works
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Works referenced in this record:

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Works referencing / citing this record:

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Real-time dynamics of axion particle production due to spontaneous decay of a coherent axion field
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Axion and hidden photon dark matter detection with multilayer optical haloscopes
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