{
  "abstract": "We establish the relation between optical condensate spectral weight and static magnetic screening in a proposed effective theory of charged bosonic condensates with an additional diamagnetic coupling. Starting from an explicit Ginzburg--Landau functional, we derive both the London equation and the transverse low-frequency conductivity. At fixed condensate parameter $q^2n_s/m^\\ast$, the modified coupling doubles the inverse-square magnetic screening length and the optical condensate weight, giving $λ_{\\rm mag}=λ_{\\rm stiff}=λ_L/\\sqrt{2}$, where $λ_L^{-2}=μ_0q^2n_s/m^\\ast$. Their ratio is therefore unity in both the standard and modified local theories: it tests consistency between measurement methods but cannot distinguish the couplings. A structured comparison of published results for Nb, Pb, YBCO, MgB$_2$, and Ba(Fe,Co)$_2$As$_2$ identifies the roles of sample matching, absolute calibration, nonlocality, and spectral-weight extraction. We formulate the requirements for a discriminating absolute-response experiment and discuss a complementary single-particle spectral prediction. The analysis separates experimentally accessible consistency checks from tests requiring independent information about condensate parameters or a different observable.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2605.20499",
  "author_total": 2,
  "authors": [
    {
      "name": "F. Minotti"
    },
    {
      "name": "G. Modanese"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2n5fny9kxs82k.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2605.20499",
  "fulltext_url": null,
  "id": "2n5fny9kxs82k",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2605.20499",
  "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",
      "physics.gen-ph"
    ],
    [
      "openalex",
      "3104|Physics of Superconductivity and Magnetism"
    ]
  ],
  "openalex": "W7161992117",
  "pdf_url": "https://arxiv.org/pdf/2605.20499",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2n5fny9kxs82k.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2605.20499",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2605.20499"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "openalex:3104|Physics of Superconductivity and Magnetism",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Optical and magnetic penetration depths under a modified electromagnetic coupling in charged bosonic condensates",
  "title_text": "Optical and magnetic penetration depths under a modified electromagnetic coupling in charged bosonic condensates",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/2n5fny9kxs82k",
  "venue": "arXiv",
  "versions": []
}