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Variations on the SU(5) axion

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arxiv 2010.13683 v1 pith:I3BMDNCW submitted 2020-10-26 hep-ph hep-th

Jérémie Quevillon , Christopher Smith This is my paper · ORCID
classification hep-phhep-th
keywords axionambiguitymechanismseesawactiveambiguouschargesdiffer
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The simultaneous embeddings of an axion state and a seesaw mechanism within the SU(5) Grand Unification Theory, both minimal and flipped, are systematically studied. It is shown that whenever B-L is active as a global symmetry, the PQ charges of the fermions are ambiguous. Various realizations of the seesaw mechanism are then found to differ only in the way this ambiguity is resolved. But since the ambiguity is unphysical, all these models are thereby predicted to be equivalent, in the sense that the axion phenomenology is identical at the low energy scale.

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Cited by 2 Pith papers

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

  1. Small-instanton effects in an atlas of KSVZ axion models

    hep-ph 2026-08 conditional novelty 6.0 of 10

    Small-instanton contributions can dominate the QCD axion potential in KSVZ models with many vector-like quarks, raising m_a to tens of MeV and shifting the m_a-g_aγγ relation.

  2. About electroweak domain walls in Majoron models

    hep-ph 2025-06 conditional novelty 5.0 of 10

    Electroweak instantons alone do not produce Majoron domain walls; a tiny instanton mass from B+L breaking is cosmologically negligible and can act as a bias or dark energy.

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