{
  "abstract": "We investigate which operators in first-order dynamical Barbero--Immirzi (BI) gravity control cosmological tensor propagation at the action level. Within a bosonic, two-derivative, curvature-linear Einstein--Cartan class, eliminating the algebraic Lorentz connection reveals a separation between the scalar sector and the tensor kinetic normalization. In particular, the Holst-to-Palatini ratio determines the scalar kinetic structure, whereas the transverse-traceless tensor mode is normalized by the parity-even Hilbert--Palatini coefficient. As a consequence, a minimal dynamical Holst sector with fixed parity-even normalization remains exactly on the general-relativistic tensor-propagation surface and does not generate anomalous gravitational-wave friction. We then construct a regular nonminimal parity-even realization in which the tensor normalization evolves cosmologically, derive the corresponding standard-siren observable, and apply current GWTC-3, GWTC-4.0, and GWTC-5.0 information as an observational test of this action-level tensor sector. The resulting constraints should therefore be interpreted as limits on the evolution of the tensor kinetic normalization rather than direct constraints on minimal BI torsion dynamics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2608.19392",
  "author_total": 6,
  "authors": [
    {
      "name": "Zhi-Fu Gao"
    },
    {
      "name": "Hui Wang"
    },
    {
      "name": "Luiz Carlos Garcia de Andrade"
    },
    {
      "name": "Na Wang"
    },
    {
      "name": "Guo-Qiang Jin"
    },
    {
      "name": "Zhou-Jian Cao"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/23g3d2dnrqgx6.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2608.19392",
  "fulltext_url": null,
  "id": "23g3d2dnrqgx6",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2608.19392",
  "language": null,
  "licence": "CC-BY-SA-4.0",
  "licence_label": "CC BY-SA 4.0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/licenses/by-sa/4.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7203917953",
  "pdf_url": "https://arxiv.org/pdf/2608.19392",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-19",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/23g3d2dnrqgx6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2608.19392",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2608.19392"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Action-level characterization of gravitational-wave propagation in dynamical Barbero--Immirzi gravity",
  "title_text": "Action-level characterization of gravitational-wave propagation in dynamical Barbero--Immirzi gravity",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/23g3d2dnrqgx6",
  "venue": "arXiv",
  "versions": []
}