{
  "abstract": "Cosmological correlators are natural observables of the primordial universe and are related to wavefunction coefficients by the Born rule. For equal-time in-in correlators in flat spacetime, we prove that all double-boundary poles cancel for arbitrary graphs, including in theories with local derivative interactions. These cancellations occur before integration over spatial loop momenta and yield a $\\textit{simplified Born rule}$ in terms of what we call embedded wavefunction coefficients. The resulting expansion reveals which physical poles can occur together while keeping the interaction dependence explicit. For conformally coupled $\\operatorname{Tr}(ϕ^3)$ theory in flat spacetime, the simplified Born rule takes the form of a uniformly weighted forest-cut expansion. From its pole combinatorics, we construct what we call the $\\textit{Born polytope}$, whose canonical function reproduces the normalized correlator for arbitrary graphs after matching its facet supports to the physical energies. The same geometry also yields a stringy formula for correlators.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.40412",
  "author_total": 1,
  "authors": [
    {
      "name": "Fan Zhu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/27bt2er388b5n.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.40412",
  "fulltext_url": null,
  "id": "27bt2er388b5n",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.40412",
  "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",
      "hep-th"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.40412",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/27bt2er388b5n.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:36:28Z",
      "native_id": "2610.40412",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.40412"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-th",
      "subfield": "high-energy"
    }
  ],
  "title": "A Simplified Born Rule for Cosmological Correlators",
  "title_text": "A Simplified Born Rule for Cosmological Correlators",
  "type": "preprint",
  "updated_at": "2026-11-01T12:20:47Z",
  "url": "https://research.draconitic.com/paper/27bt2er388b5n",
  "venue": "arXiv",
  "versions": []
}