{
  "abstract": "Standard pre-geometric mechanisms reproduce the $Λ$CDM model but lack a natural source for inflation. We propose a mechanism for the emergence of scalar-coupled topological terms by extending the Lie algebra of a MacDowell-Mansouri model to a Lie algebroid. These terms are commonly regarded as a source for cosmological inflation in effective string actions. With an additional constraint on torsion imposed, the theory reduces to a scalar-tensor theory belonging to the Horndeski class, and reproduces inflationary dynamics that meet existing constraints (Planck/BICEP/Keck and GW170817).",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.14596",
  "author_total": 2,
  "authors": [
    {
      "name": "Egor Pluzhnikov"
    },
    {
      "name": "Stanislav Alexeyev"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/acbmvn9ap3g5y.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.14596",
  "fulltext_url": null,
  "id": "acbmvn9ap3g5y",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.14596",
  "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": null,
  "pdf_url": "https://arxiv.org/pdf/2608.14596",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/acbmvn9ap3g5y.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:30:52Z",
      "native_id": "2608.14596",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.14596"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    },
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "MacDowell-Mansouri $σ$-model",
  "title_text": "MacDowell-Mansouri σ-model",
  "type": "preprint",
  "updated_at": "2026-10-30T12:33:41Z",
  "url": "https://research.draconitic.com/paper/acbmvn9ap3g5y",
  "venue": "arXiv",
  "versions": [
    {
      "doi": "10.1103/h735-611y",
      "pid": null,
      "relation": "published-as",
      "title": null,
      "venue": null
    }
  ]
}