{
  "abstract": "Bright standard sirens from the Einstein Telescope (ET) provide an independent probe of cosmic expansion. In this article, we test whether future ET observations can constrain a dynamical dark-energy scenario inspired by DESI DR2. Using the best-fitting 29-bin dark-energy equation of state as the fiducial cosmology, we generate mock catalogs of 100, 500, 1000, and 3000 binary-neutron-star standard sirens with known host redshifts, and reconstruct the equation of state using both GW-only data and combined analyses with DESI DR2 BAO, BBN, and a compressed CMB constraint. The effective numbers of constrained modes are $N_{\\mathrm{eff}}\\sim 4-5$ (GW-only) and $5-6$ (combined), with information concentrated in a few correlated modes. The GW3000 catalog yields a departure from $Λ$CDM exceeding $5σ$, and combined analyses reach similar significance for $O(10^3)$ events. Comparing flat $Λ$CDM with its Chevallier-Polarski-Linder extension using GW data alone gives significances of $3.3σ$ and $6.3σ$ for 1000 and 3000 events, rising to $7.7σ$ and $11.0σ$ with external data. These results indicate that a few thousand ET bright standard sirens could provide a sensitive test of departures from $Λ$CDM.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.29908",
  "author_total": 2,
  "authors": [
    {
      "name": "Yuanmin Mao"
    },
    {
      "name": "Wen Zhao"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/1n6nkjamatar1.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.29908",
  "fulltext_url": null,
  "id": "1n6nkjamatar1",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.29908",
  "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"
    ],
    [
      "openalex",
      "3103|Cosmology and Gravitation Theories"
    ]
  ],
  "openalex": "W7223251557",
  "pdf_url": "https://arxiv.org/pdf/2610.29908",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/1n6nkjamatar1.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:34:19Z",
      "native_id": "2610.29908",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.29908"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    }
  ],
  "title": "Testing Dynamical Dark-Energy Model with Standard Sirens",
  "title_text": "Testing Dynamical Dark-Energy Model with Standard Sirens",
  "type": "preprint",
  "updated_at": "2026-10-30T12:34:19Z",
  "url": "https://research.draconitic.com/paper/1n6nkjamatar1",
  "venue": "arXiv",
  "versions": []
}