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Gravitational Waves from Supercool Axions

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arxiv 1912.06139 v2 pith:A2WSVNLA submitted 2019-12-12 hep-ph astro-ph.COhep-th

Luigi Delle Rose , Giuliano Panico , Michele Redi , Andrea Tesi This is my paper · ORCID
classification hep-phastro-ph.COhep-th
keywords transitiongravitationalcoupledmodelsorderphasewavealready
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We study the dynamics of the Peccei-Quinn (PQ) phase transition for the QCD axion. In weakly coupled models the transition is typically second order except in the region of parameters where the PQ symmetry is broken through the Coleman-Weinberg mechanism. In strongly coupled realizations the transition is often first order. We show examples where the phase transition leads to strong supercooling lowering the nucleation temperature and enhancing the stochastic gravitational wave signals. The models predict a frequency peak in the range 100-1000 Hz with an amplitude that is already within the sensitivity of LIGO and can be thoroughly tested with future gravitational wave interferometers.

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Forward citations

Cited by 6 Pith papers

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

  1. Gravitational Waves from Particles Produced from Bubble Collisions in First-Order Phase Transitions

    astro-ph.CO 2024-12 conditional novelty 7.0 of 10

    Particles produced from bubble collisions generate a gravitational-wave signal whose low-frequency slope can dominate the standard signal from first-order phase transitions.

  2. No room for minimal monopole dark matter

    hep-ph 2025-09 accept novelty 6.0 of 10

    In the minimal SO(3) 't Hooft-Polyakov dark sector, the relic abundance of the stable electrically charged W' boson always exceeds the magnetic monopole abundance, so dark monopoles cannot be the dominant dark matter.

  3. Primordial Black Holes (as Dark Matter) from the Supercooled Phase Transitions with Radiative Symmetry Breaking

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Supercooled radiative symmetry breaking phase transitions generically produce primordial black holes, and the false-vacuum decay rate grows exponentially with time to high accuracy.

  4. Gravitational waves and dark matter with Witten effect

    hep-ph 2025-01 conditional novelty 4.0 of 10

    A dark SU(2) phase transition can produce monopole dark matter, make the axion heavy via the Witten effect, and generate nanohertz gravitational waves matching PTA hints.

  5. Supercooled Phase Transitions with Radiative Symmetry Breaking

    hep-ph 2026-02 unverdicted novelty 3.0 of 10

    Supercooled phase transitions from radiative symmetry breaking can be described, at leading and next-to-leading order, by formulas depending only on three or four parameters (χ0, β̄, g, and g̃ at NLO).

  6. Populating dark sectors with relativistic bubble walls

    hep-ph 2024-12 conditional novelty 3.0 of 10

    Relativistic bubble walls can pair-produce dark matter much heavier than the phase transition scale, which then free-streams as warm dark matter.

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