QCD axion dark matter from long-lived domain walls during matter domination

Article, Preprint English OPEN
Harigaya, Keisuke; Kawasaki, Masahiro; (2018)
  • Publisher: Elsevier
  • Journal: Physics letters B (issn: 0370-2693)
  • Related identifiers: doi: 10.1016/j.physletb.2018.04.056
  • Subject: High Energy Physics - Phenomenology | Physics | QC1-999 | Astrophysics - Cosmology and Nongalactic Astrophysics
    arxiv: High Energy Physics::Phenomenology

The domain wall problem of the Peccei–Quinn mechanism can be solved if the Peccei–Quinn symmetry is explicitly broken by a small amount. Domain walls decay into axions, which may account for dark matter of the universe. This scheme is however strongly constrained by ove... View more
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