{
  "abstract": "We test the hypothesis that Newton's gravitational constant underwent a rapid transition approximately $73$-$130\\,{\\rm Myr}$ ago, as proposed in some resolutions of the Hubble tension. Fully convective red dwarf stars with masses below $\\sim0.35\\,M_\\odot$ have thermal timescales comparable to the proposed transition look-back times, so an appreciable present-day memory can remain. We show that a rapid step in $G$ induces measurable changes in their radii and confront these predictions with mass-radius measurements of eight red dwarfs in detached eclipsing binaries. We find that the $G$-step models proposed to resolve the Hubble tension, corresponding to a $4\\%$ change in $G$ at a look-back time of $73\\,{\\rm Myr}$ and an $11\\%$ change at $130\\,{\\rm Myr}$, are excluded at significances of $3.1σ$ and $4.0σ$, respectively.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.04048",
  "author_total": 2,
  "authors": [
    {
      "name": "Jeremy Sakstein"
    },
    {
      "name": "Harry Desmond"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2vd0hy6py9v3h.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.04048",
  "fulltext_url": null,
  "id": "2vd0hy6py9v3h",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.04048",
  "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",
      "astro-ph.GA"
    ],
    [
      "arxiv",
      "astro-ph.SR"
    ],
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "openalex",
      "3103|Stellar, planetary, and galactic studies"
    ]
  ],
  "openalex": "W7220711956",
  "pdf_url": "https://arxiv.org/pdf/2610.04048",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-02",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2vd0hy6py9v3h.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:27:01Z",
      "native_id": "2610.04048",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.04048"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.GA",
      "subfield": "galaxies"
    },
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.SR",
      "subfield": "stellar"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    }
  ],
  "title": "Stars Would Remember a Recent Gravitational Transition: Testing G-step Resolutions of the Hubble Tension with Red Dwarfs",
  "title_text": "Stars Would Remember a Recent Gravitational Transition: Testing G-step Resolutions of the Hubble Tension with Red Dwarfs",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:01Z",
  "url": "https://research.draconitic.com/paper/2vd0hy6py9v3h",
  "venue": "arXiv",
  "versions": []
}