{
  "abstract": "A coupling of photons to the cosmic neutrino asymmetry current has been proposed to explain the hinted isotropic rotation of CMB polarization. Gauge invariant UV completions require a Kalb-Ramond field that is exactly dual to a massless axion. We show that, in this case, the product of the axion-photon coupling and the axion-neutrino current coupling is fixed by the signal, $g_{aγ}/f_\\ell=1/Λ_*^2$ with $Λ_*\\simeq10$ TeV. Using $SU(2)_L$ gauge invariance we show that the dual axion couples to electrons as $g_{aγ}g_{ae}=m_e/Λ_*^2\\simeq5\\times10^{-12}\\,\\mathrm{GeV}^{-1}$. This value is excluded by the measured electron magnetic moment combined with light-shining-through-a-wall searches, as well as by stellar evolution. Conserved anomaly-free currents may evade these bounds, but then either a contact interaction among SM fermions excludes the model, or the relic neutrinos decouple from the signal. We conclude that cosmic neutrinos cannot induce a birefringence signal.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2611.07578",
  "author_total": 1,
  "authors": [
    {
      "name": "Mario Reig"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/5p7k0s348bgc0.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2611.07578",
  "fulltext_url": null,
  "id": "5p7k0s348bgc0",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2611.07578",
  "language": null,
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2611.07578",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-05",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/5p7k0s348bgc0.ris",
  "sources": [
    {
      "first_seen": "2026-11-06T18:21:30Z",
      "native_id": "2611.07578",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2611.07578"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Can cosmic neutrinos induce a cosmic birefringence signal?",
  "title_text": "Can cosmic neutrinos induce a cosmic birefringence signal?",
  "type": "preprint",
  "updated_at": "2026-11-07T18:20:18Z",
  "url": "https://research.draconitic.com/paper/5p7k0s348bgc0",
  "venue": "arXiv",
  "versions": []
}