{
  "abstract": "We investigate a non-minimally coupled scalar field in non-metricity gravity, adopting a non-trivial connection class in spatially flat FLRW spacetimes. In contrast to the coincident-gauge choice, this connection class activates an additional dynamical degree of freedom (DoF) that modifies the background evolution. We study two representative models, defined by power-law and exponential coupling functions with the exponential potential for scalar field. Confronting both models with recent combined datasets - DESI BAO, two independent supernova compilations, and cosmic chronometers - we find that each reproduces an extended matter-dominated era followed by a stable late-time de-Sitter attractor, with inferred parameters consistent with the standard $Λ$CDM model. A complementary autonomous dynamical-system analysis identifies a sequence of critical points describing successive stiff-fluid, transient matter-dominated, and stable de-Sitter phases, ensuring a viable thermal history of the universe. The observational and dynamical results are mutually consistent and support the cosmological viability of the proposed models.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.33146",
  "author_total": 3,
  "authors": [
    {
      "name": "Saddam Hussain"
    },
    {
      "name": "Ghulam Murtaza"
    },
    {
      "name": "Avik De"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/3sv2r6m3q1qse.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.33146",
  "fulltext_url": null,
  "id": "3sv2r6m3q1qse",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.33146",
  "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"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.33146",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/3sv2r6m3q1qse.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.33146",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.33146"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Observational constraints on a non-minimally coupled scalar field in non-metricity gravity with an extra degree of freedom",
  "title_text": "Observational constraints on a non-minimally coupled scalar field in non-metricity gravity with an extra degree of freedom",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/3sv2r6m3q1qse",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1088/1361-6382/aeaf9b",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}