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Electroweak axion string and superconductivity

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arxiv 2010.02834 v3 pith:GYMGG3QX submitted 2020-10-06 hep-ph astro-ph.COhep-th

Yoshihiko Abe , Yu Hamada , Koichi Yoshioka This is my paper · ORCID
classification hep-phastro-ph.COhep-th
keywords axionelectroweakstringstringscurrentfluxlargescale
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We study the axion strings with the electroweak gauge flux in the DFSZ axion model and show that these strings, called the electroweak axion strings, can exhibit superconductivity without fermionic zero modes. We construct three types of electroweak axion string solutions. Among them, the string with $W$-flux can be lightest in some parameter space, which leads to a stable superconducting cosmic string. We also show that a large electric current can flow along the string due to the Peccei-Quinn scale much higher than the electroweak scale. This large current induces a net attractive force between the axion strings with the same topological charge, which opens a novel possibility that the axion strings form Y-junctions in the early universe.

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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. Gravitational Waves from Superconducting Cosmic Strings

    astro-ph.CO 2026-07 conditional novelty 7.0 of 10

    Lattice simulations show the gravitational-wave spectrum from superconducting cosmic strings develops a coupling-dependent suppression at high frequencies, distinguishing them from ordinary Abelian–Higgs strings.

  2. Stochastic Gravitational Wave Background from Chiral Superconducting Cosmic Strings

    astro-ph.CO 2024-12 conditional novelty 6.0 of 10

    Superconducting cosmic string loops emit vector radiation whose strength is fitted in this paper; including this channel suppresses the predicted gravitational wave background for strong coupling and can make the spec...

  3. Stability of Superconducting Strings

    hep-ph 2024-12 conditional novelty 6.0 of 10

    Lattice simulations and S-matrix calculations show superconducting string loops relax to stable vortons, with fermion escape and decay rates suppressed below previous estimates.

  4. Gravitational wave and dark matter from Axion-Higgs string

    hep-ph 2024-12 conditional novelty 5.0 of 10

    Lattice simulations show axion and axion-Higgs strings produce gravitational waves too weak for current pulsar timing arrays once dark matter overproduction is taken into account.

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