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Suppressing the QCD axion abundance by hidden monopoles
- Source :
- Physics Letters B, Vol 753, Iss C, Pp 677-681 (2016), Physics Letters B, Physics letters / B 753, 677-681 (2016). doi:10.1016/j.physletb.2015.12.075
- Publication Year :
- 2016
- Publisher :
- Elsevier, 2016.
-
Abstract
- We study the Witten effect of hidden monopoles on the QCD axion dynamics, and show that its abundance as well as isocurvature perturbations can be significantly suppressed if there is a sufficient amount of hidden monopoles. When the hidden monopoles make up a significant fraction of dark matter, the Witten effect suppresses the abundance of axion with the decay constant smaller than $10^{12}$ GeV. The cosmological domain wall problem of the QCD axion can also be avoided, relaxing the upper bound on the decay constant when the Peccei-Quinn symmetry is spontaneously broken after inflation.<br />Comment: 6 pages, 1 figure
- Subjects :
- Particle physics
Nuclear and High Energy Physics
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
Spontaneous symmetry breaking
High Energy Physics::Lattice
Dark matter
Magnetic monopole
FOS: Physical sciences
domain wall
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Peccei-Quinn [symmetry]
monopole
dark matter
Domain wall (string theory)
High Energy Physics::Theory
High Energy Physics - Phenomenology (hep-ph)
0103 physical sciences
ddc:530
Exponential decay
inflation
010306 general physics
Axion
Quantum chromodynamics
Physics
Inflation (cosmology)
010308 nuclear & particles physics
High Energy Physics::Phenomenology
spontaneous symmetry breaking
suppression
lcsh:QC1-999
High Energy Physics - Phenomenology
perturbation [isocurvature]
axion [quantum chromodynamics]
High Energy Physics::Experiment
decay constant
lcsh:Physics
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 18732445 and 03702693
- Volume :
- 753
- Database :
- OpenAIRE
- Journal :
- Physics Letters B
- Accession number :
- edsair.doi.dedup.....f3e7a783b6582dde8206f28b58db9213
- Full Text :
- https://doi.org/10.1016/j.physletb.2015.12.075