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QCD Axion Dark Matter with a Small Decay Constant

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arxiv 1711.10486 v2 pith:QUQMFTD6 submitted 2017-11-28 hep-ph astro-ph.CO

Raymond T. Co , Lawrence J. Hall , Keisuke Harigaya This is my paper
classification hep-phastro-ph.CO
keywords darkmatteraxionconstantdecayabundanceariseaxions
verification ladder T0 review T1 audit T2 compute T3 formal
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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 $f_a \sim \mathcal{O}(10^{11})$ 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 $f_a \sim (10^8 -10^{11})$ GeV. The axions may be warm enough to give deviations from cold dark matter in Large Scale Structure.

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Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Dark Matter and Baryon Asymmetry from Monopole-Axion Interactions

    hep-ph 2025-11 conditional novelty 8.0 of 10

    A rotating QCD axion dissipates kinetic energy via dark monopole dyon transitions, explaining dark matter and baryon asymmetry with a predicted axion decay constant below 10^9 GeV.

  2. Exploring the Landscape of Spontaneous CP Violation in Supersymmetric Theories

    hep-ph 2025-10 unverdicted novelty 5.0 of 10

    Spontaneous CP violation is realized in SUSY via an extended spurion formalism in the exact limit and a model with intermediate-scale breaking along pseudo-flat directions stabilized by soft terms and non-perturbative...

  3. Universal lower bound on the axion decay constant from free streaming effects

    astro-ph.CO 2025-07 conditional novelty 5.0 of 10

    Abundance-boosted axion dark matter generically produces warm nonzero-momentum modes, so Lyman-alpha free-streaming and isocurvature bounds exclude fa below about 10^14-10^15 GeV (10^-18 eV/ma) for most ultralight axi...

  4. Type II Seesaw Leptogenesis in a Majoron background

    hep-ph 2025-06 unverdicted novelty 5.0 of 10

    Spontaneous wash-in leptogenesis in Type II Seesaw with Majoron pNGB background enables baryon asymmetry generation alongside dark matter cogenesis for specific v_T, v_sigma and m_j ranges.

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