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Higher Axion Strings

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arxiv 2503.18707 v1 pith:NOWMRTRP submitted 2025-03-24 hep-ph

Vazha Loladze , Arthur Platschorre , Mario Reig This is my paper
classification hep-ph
keywords axionfieldstringsaxionsboundarycomplexhigherhigher-form
verification ladder T0 review T1 audit T2 compute T3 formal
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We study the minimal requirements to obtain axion strings for axions with exponentially good quality. These ingredients appear in theories where an axion coming from a higher-form gauge field mixes with the phase of a complex scalar field in a situation that resembles higher-groups. The resulting axion is perturbatively massless and inherits a high-quality shift symmetry from the global higher-form symmetry while being compatible with a post-inflationary axion scenario. Due to differences and resemblances with both, extra-dimensional and field theory axions, we call this field the higher axion. To this end, we study a toy model on a 5-dimensional manifold with boundary. The boundary hosts the complex scalar that provides axion strings through standard mechanisms. In addition, we study how these scenarios may arise in heterotic string theory and type II string compactifications.

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Cited by 12 Pith papers

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

  1. Big Axions

    hep-ph 2026-06 unverdicted novelty 8.0 of 10

    Big axions are axion models from collective spontaneous breaking of a delocalized network of U(1) symmetries that realize high-quality accidental global symmetries, solve the strong CP problem, and may explain dark matter.

  2. Heterotic String Theory Suggests a QCD Axion Near 0.5 neV

    hep-th 2026-05 unverdicted novelty 7.0 of 10

    Heterotic string theory implies the QCD axion mass is bounded below by 0.5 neV and typically falls in [0.5, 0.8] neV across most compactifications.

  3. Suppressing Extra-Dimensional Axion Isocurvature Dynamically

    hep-ph 2026-07 conditional novelty 6.0 of 10

    Radion dynamics in warped 5D models enhance the axion decay constant during inflation, satisfying CMB isocurvature bounds at higher Hubble scales while restoring the QCD window afterward.

  4. Testing F-theory GUTs with the Axiverse

    hep-th 2026-06 unverdicted novelty 6.0 of 10

    In F-theory GUTs, non-universal ALPs induced by hypercharge flux satisfy g_aγ/m_a well below the QCD axion prediction when gauge couplings unify near the string scale.

  5. Pre-inflationary QCD axion stars after moduli domination

    hep-ph 2026-04 unverdicted novelty 6.0 of 10

    Pre-inflationary QCD axions form dense stars with densities up to 10^4 eV^4 that contain up to 50% of dark matter after moduli domination.

  6. The String Theory Photoverse

    hep-th 2025-10 conditional novelty 6.0 of 10

    Massless string-theory hidden photons acquire dimension-six dipole couplings to SM fermions with suppression scale Λ = αM_s, converting dipole measurements into constraints on the string scale.

  7. The Minimal High-Quality QCD Axion

    hep-ph 2026-07 conditional novelty 5.5 of 10

    A flat-interval 5D U(1) Wilson-line axion with 4D KSVZ/DFSZ anomaly sector supplies exponential quality protection while remaining minimal.

  8. Constraining F-theory Model Building with QCD Axions

    hep-th 2026-05 unverdicted novelty 5.0 of 10

    QCD axions constrain F-theory base threefolds to have rigid or flux-rigidified divisors, yielding typical axion masses around 10^{-9} eV and decay constants near 10^{15} GeV in allowed regions.

  9. Constraining F-theory Model Building with QCD Axions

    hep-th 2026-05 unverdicted novelty 5.0 of 10

    F-theory models with the Standard Model spectrum are constrained by QCD axion physics, yielding typical detectable axion masses around 10^{-9} eV and decay constants around 10^{15} GeV in allowed regions.

  10. Axion Quality in Warped Extra-Dimension

    hep-ph 2026-04 unverdicted novelty 5.0 of 10

    Warped extra-dimensional Wilson-line axions can achieve high quality when non-QCD potential contributions from charged bulk fields are parametrically suppressed by geometry and brane effects.

  11. Axion Quality in Warped Extra-Dimension

    hep-ph 2026-04 unverdicted novelty 5.0 of 10

    Warped extra-dimensional axion models achieve high quality when nonlocal U(1)-charged field effects are sufficiently suppressed by the warp factor and orbifold structure.

  12. Axions at the meV Crossroads: Theory, Cosmology, Astrophysics, and Experiments

    hep-ph 2026-03 conditional novelty 2.0 of 10

    The meV axion window is presented as a coherent, cross-validated search program in which string theory, stellar cooling, dark matter, and new detector concepts converge on the same mass range.

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