{
  "abstract": "Disconnected diagrams remain a major challenge for precision lattice QCD calculations because of their large statistical fluctuations. We investigate a subtraction method based on a domain decomposition of the Dirac operator, yielding a biased but substantially less noisy estimator. Applying the method to charmonium disconnected correlators computed using distillation, we achieve a variance reduction of about three orders of magnitude at only twice the computational cost, providing a practical alternative to completely neglecting disconnected contributions.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.37049",
  "author_total": 5,
  "authors": [
    {
      "name": "Lorenzo Barca"
    },
    {
      "name": "Joshua Crawford"
    },
    {
      "name": "Jacob Finkenrath"
    },
    {
      "name": "Stefan Schaefer"
    },
    {
      "name": "Juan Andrés Urrea-Niño"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/9qh9qxg16mf8p.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.37049",
  "fulltext_url": null,
  "id": "9qh9qxg16mf8p",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.37049",
  "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",
      "hep-lat"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2609.37049",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/9qh9qxg16mf8p.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:31Z",
      "native_id": "2609.37049",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.37049"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-lat",
      "subfield": "high-energy"
    }
  ],
  "title": "Subtraction method for disconnected diagrams in full QCD",
  "title_text": "Subtraction method for disconnected diagrams in full QCD",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:31Z",
  "url": "https://research.draconitic.com/paper/9qh9qxg16mf8p",
  "venue": "arXiv",
  "versions": []
}