{
  "abstract": "We investigate the Landau-Zener description of resonant axion-photon conversion in neutron star magnetospheres. We find that this picture often fails for axion conversions to millimeter-to-optical band photons due to the characteristic resonance width exceeding the size of the conversion region. This comparison of scales yields a simple criterion for evaluating the validity of the Landau-Zener formula. We verify this criterion numerically, and show that when invalid, the Landau-Zener conversion probability may significantly deviate from the numerical result. In light of these findings, we revise constraints on axions from neutron star optical-band polarization searches.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2606.31476",
  "author_total": 3,
  "authors": [
    {
      "name": "Matti Heikinheimo"
    },
    {
      "name": "Topi Sirkiä"
    },
    {
      "name": "Kimmo Tuominen"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/16tnthvy93zj5.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2606.31476",
  "fulltext_url": null,
  "id": "16tnthvy93zj5",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2606.31476",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "astro-ph.HE"
    ],
    [
      "arxiv",
      "hep-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2606.31476",
  "pmcid": null,
  "pmid": null,
  "published": "2026-11-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/16tnthvy93zj5.ris",
  "sources": [
    {
      "first_seen": "2026-11-04T15:21:24Z",
      "native_id": "2606.31476",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2606.31476"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.HE",
      "subfield": "high-energy-astrophysics"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Landau-Zener formula and resonant axion conversion in neutron star magnetospheres",
  "title_text": "Landau-Zener formula and resonant axion conversion in neutron star magnetospheres",
  "type": "preprint",
  "updated_at": "2026-11-06T18:21:01Z",
  "url": "https://research.draconitic.com/paper/16tnthvy93zj5",
  "venue": "arXiv",
  "versions": []
}