{
  "abstract": "We investigate inflationary magnetogenesis driven by a non conformal coupling in the case of large-field $α$-attractor inspired models. We introduce potential-dependent electromagnetic coupling functions $f(ϕ)$ that reproduce the scaling $f\\propto a^p$ during slow roll. Starting from Starobinsky inflation, we analytically derive explicit couplings for $(E)$-model and $(T)$-model potentials. We then study how these functions affect electromagnetic amplification in the regime of non-minimal coupling between the inflaton field and the Ricci scalar $ϕ^2 R$. In particular, we compare different values for the coupling strength $ξ$, accounting for electromagnetic backreaction and Schwinger pair production through the gradient expansion formalism. Our numerical results show that the non-minimal coupling affects the evolution of the electromagnetic sector and the resulting magnetic-field amplitude. We find that, within the analyzed configurations, minimally coupled and $ξ>0$ scenarios are compatible with the adopted CMB constraints, yielding conditional present-day magnetic-field estimates of order $10^{-23}$ G.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.36228",
  "author_total": 2,
  "authors": [
    {
      "name": "Antonino G. Marino"
    },
    {
      "name": "Tommaso Mengoni"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4b7b9qdtxvznp.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.36228",
  "fulltext_url": null,
  "id": "4b7b9qdtxvznp",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.36228",
  "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.CO"
    ],
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7224114525",
  "pdf_url": "https://arxiv.org/pdf/2610.36228",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/4b7b9qdtxvznp.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:50Z",
      "native_id": "2610.36228",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.36228"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Non-minimal $α$-attractor magnetogenesis with potential dependent couplings",
  "title_text": "Non-minimal α-attractor magnetogenesis with potential dependent couplings",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:50Z",
  "url": "https://research.draconitic.com/paper/4b7b9qdtxvznp",
  "venue": "arXiv",
  "versions": []
}