{
  "abstract": "Pulsar timing arrays (PTAs) probe the stochastic gravitational wave (GW) background through the angular cross-correlations of timing residuals. For a GW background in general relativity (GR), the expected overlap reduction function (ORF) is given by the Hellings--Downs (HD) correlation. We investigate how a nonzero graviton mass modifies this prediction through a massive dispersion relation and additional vector and scalar polarizations, producing a modified effective ORF. In the massive limit, the finite-distance pulsar terms survive angular averaging, multiplying the correlations of all three polarization sectors by a pulsar-dependent factor that can enhance, suppress, or reverse them. We adopt a tensor Earth--Earth normalization that preserves the continuous finite-distance effect. In the massless limit, we find that the vector ORF vanishes and the scalar ORF approaches a finite breathing mode. We propose the phenomenological prescription $Ω_S/Ω_T=A_S(m_g/ω)^{n_S}$, with scalar amplitude parameter $A_S$ and suppression index $n_S>0$. These results provide a consistent framework for future PTA analyses of massive gravity.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.31912",
  "author_total": 3,
  "authors": [
    {
      "name": "Chris Choi"
    },
    {
      "name": "Tina Kahniashvili"
    },
    {
      "name": "Barnabás Póczos"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/19djxtzgka0px.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.31912",
  "fulltext_url": null,
  "id": "19djxtzgka0px",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.31912",
  "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",
      "astro-ph.CO"
    ],
    [
      "arxiv",
      "gr-qc"
    ],
    [
      "openalex",
      "3103|Pulsars and Gravitational Waves Research"
    ]
  ],
  "openalex": "W7223700757",
  "pdf_url": "https://arxiv.org/pdf/2610.31912",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/19djxtzgka0px.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:15Z",
      "native_id": "2610.31912",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.31912"
    }
  ],
  "subjects": [
    {
      "field": "astronomy",
      "origin": "arxiv:astro-ph.CO",
      "subfield": "cosmology"
    },
    {
      "field": "physics",
      "origin": "arxiv:gr-qc",
      "subfield": "gravitation"
    }
  ],
  "title": "Finite-distance effects and scalar suppression in massive gravity",
  "title_text": "Finite-distance effects and scalar suppression in massive gravity",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:15Z",
  "url": "https://research.draconitic.com/paper/19djxtzgka0px",
  "venue": "arXiv",
  "versions": []
}