{
  "abstract": "A scalar field non-minimally coupled to gravity can be the driver of cosmic acceleration. Such a non-minimal coupling (NMC) can produce a non-zero gravitational-wave (GW) friction function $α_M(z)$, which modifies the luminosity distance inferred from GW sources relative to its electromagnetic counterpart. We use a particular NMC scalar-tensor model, that explains time-varying dark energy in good alignment with DESI, to predict $α_M(z)$ and the expected GW/EM luminosity-distance ratio $D_L^{\\rm GW}/D_L^{\\rm EM}$, and map it onto two common parametrizations---the $c_M$ and the $(Ξ_0,n)$ models. We find $c_M = -0.5\\pm 0.2$ and $Ξ_0 = 0.88\\pm 0.05$, $n=3.2\\pm 0.3$, both consistent with GWTC-5 constraints at the $\\lesssim 1σ$ level. This consistency is mostly driven by current large uncertainties in GW data, which lead to measurements consistent with both $Λ$CDM and the NMC model. By contrast, the dark energy constraints derived from analyzing cosmological data, under the common parametric scalar-tensor model using $α_M(z)=c_MΩ_Λ(z)/Ω_{Λ0}$ and the CPL parametrized equation of state $w_0w_a$, are in $2.2σ$ ($3.6σ$) tension with the NMC predictions for the $c_M$ ($w_0w_a$) parameter. We confirm that, in order to avoid cosmological instabilities, this parametrized model imposes strong implicit priors that are incompatible with physically-motivated scalar-tensor models when dark energy is dynamical.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.04112",
  "author_total": 2,
  "authors": [
    {
      "name": "Macarena Lagos"
    },
    {
      "name": "William J. Wolf"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/epdzf8jxcx34z.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.04112",
  "fulltext_url": null,
  "id": "epdzf8jxcx34z",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.04112",
  "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",
      "gr-qc"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7208755590",
  "pdf_url": "https://arxiv.org/pdf/2609.04112",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-03",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/epdzf8jxcx34z.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:31Z",
      "native_id": "2609.04112",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.04112"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Consistency between cosmological and standard siren observations in evolving dark energy",
  "title_text": "Consistency between cosmological and standard siren observations in evolving dark energy",
  "type": "preprint",
  "updated_at": "2026-10-30T12:18:31Z",
  "url": "https://research.draconitic.com/paper/epdzf8jxcx34z",
  "venue": "arXiv",
  "versions": []
}