{
  "abstract": "Context: Entangled Relativity is a nonlinear reformulation of General Relativity that forbids vacuum solutions and requires fewer fundamental parameters. Its extension with a positive cosmological constant recovers the corresponding General Relativity solutions when the on-shell matter Lagrangian satisfies Lm = T . Aims: We investigate its cosmological evolution during the matter-and dark-energy-dominated eras and constrain its late-time cosmological parameters. Methods: We analyze the associated autonomous dynamical system and perform a Markov chain Monte Carlo analysis using 33 cosmic-chronometer measurements and the Pantheon+SH0ES sample. We sample {H0, Ωm, Ω ϕ , ΩFF}, assuming spatial flatness, and infer ΩΛ,0 from the Friedmann constraint. Results: The dynamical system contains eight physical saddle points, one scalar-field-dominated repeller, and a unique de Sitter attractor. For the combined data set, we obtain {H0 = 73.3 +0.3 -0.3 , Ωm = 0.36 +0.07 -0.09 , Ω ϕ = -0.04 +0.05 -0.05 , ΩFF = 0.03 +0.04 -0.02 , ΩΛ = 0.65 +0.05 -0.05 }, with H0 in km, s -1 , Mpc -1 . Assuming dust-like dark matter and identifying the free-fermion component with neutrinos, we obtain mν = 1.4 +2.0 -1.0 , eV. We also obtain -3.5 × 10 -12 ≤ Ġ G ,0-ER ≤ 0.1 × 10 -12 yr -1 . Conclusions: Entangled Relativity can distinguish matter components that are degenerate at the background level in General Relativity and allows the neutrino mass scale to be constrained using low-redshift data alone. Extending the analysis to the radiation era requires determining the on-shell matter Lagrangian of the interacting primordial plasma.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 5,
  "authors": [
    {
      "name": "Thomas Chehab"
    },
    {
      "name": "Elias Orn Frimannsson"
    },
    {
      "name": "Josuah Mea"
    },
    {
      "name": "David F Mota"
    },
    {
      "name": "Olivier Minazzoli"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/90ya4npw2yj5a.bib",
  "cited_by": 0,
  "doi": null,
  "fulltext_url": null,
  "id": "90ya4npw2yj5a",
  "issns": [],
  "landing_url": "https://hal.science/hal-05801295v1",
  "language": "en",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.grqc"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://hal.science/hal-05801295/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/90ya4npw2yj5a.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:57Z",
      "native_id": "hal-05801295",
      "source": "hal",
      "url": "https://hal.science/hal-05801295v1"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "hal:1.phys.grqc",
      "subfield": "gravitation"
    }
  ],
  "title": "On a cosmological study of Entangled Relativity with a cosmological constant",
  "title_text": "On a cosmological study of Entangled Relativity with a cosmological constant",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:57Z",
  "url": "https://research.draconitic.com/paper/90ya4npw2yj5a",
  "venue": "HAL",
  "versions": []
}