{
  "abstract": "We study non-minimal unimodular inflation in the Einstein frame; the effective potential takes the form $U(φ)=U_0(1+ξφ^2/\\mpl^2)^{-2}$. We consider the canonical field map and the inflationary observables directly from the Einstein-frame action. The exact potential slow-roll parameters, the leading scalar running, the scalar-amplitude normalization, the e-fold relation, and the end-of-inflation condition are obtained analytically. The model has a nontrivial structural tension: an $ε_V=1$ exit requires $ξ>1/2$, whereas the near-origin slow-roll regime requires $ξ\\ll1$ and gives $n_s\\simeq1-8ξ$. We next test three distinct swampland diagnostics. The further-refined de Sitter conjecture (FRDSSC) introduces the independent conjectural parameters $a$, $b$, and $q$, while the scalar weak gravity conjecture (SWGC) and its strong form (SSWGC) contain no analogous tunable conjecture parameter in the single-field realization adopted here. All three criteria are evaluated using the canonically normalized Einstein-frame scalar. Analytic limits show that the SWGC is violated at the stationary point for every nonzero $ξ$, whereas the SSWGC at that point requires $ξ\\gtrsim0.0643$. In the large-field limit both scalar weak-gravity diagnostics reduce to the same threshold $ξ\\ge0.1$. Numerical scans then show that the observationally relevant ACT/P-ACT region does not satisfy either scalar weak-gravity criterion, while the FRDSSC can be satisfied for $a$ close to unity. Consequently, the minimal model can reproduce acceptable $(n_s,r)$ at isolated field values, but this does not constitute a complete 50-60 e-fold inflationary history or simultaneous satisfaction of all three conjectures.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.27991",
  "author_total": 6,
  "authors": [
    {
      "name": "Saeed Noori Gashti"
    },
    {
      "name": "Mohammad Reza Alipour"
    },
    {
      "name": "Mohammad Ali S. Afshar"
    },
    {
      "name": "Behnam Pourhassan"
    },
    {
      "name": "İzzet Sakallı"
    },
    {
      "name": "Phongpichit Channuie"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fqtngjtjfd8jx.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.27991",
  "fulltext_url": null,
  "id": "fqtngjtjfd8jx",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.27991",
  "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",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-th"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7223111602",
  "pdf_url": "https://arxiv.org/pdf/2610.27991",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-20",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/fqtngjtjfd8jx.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:04Z",
      "native_id": "2610.27991",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.27991"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "Non-minimal unimodular inflation revisited: Swampland diagnostics and CMB constraints",
  "title_text": "Non-minimal unimodular inflation revisited: Swampland diagnostics and CMB constraints",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:04Z",
  "url": "https://research.draconitic.com/paper/fqtngjtjfd8jx",
  "venue": "arXiv",
  "versions": []
}