{
  "abstract": "We investigate how femtoscopic correlations modify the relation between the spin entanglement of emitted particle pairs and that of pairs selected at a given relative momentum. For two spin-$\\frac{1}{2}$ particles, we show that the momentum-selected spin state can be entangled even when the corresponding state at emission is separable. We derive a momentum-dependent separability criterion that determines whether the observed spin correlations require entanglement at emission. As an application, we consider a pair of identical $Λ$ hyperons, for which quantum statistics and final-state interactions affect the singlet and triplet spin channels differently at low relative momentum. Our results provide a framework for using experimentally accessible spin correlations to investigate entanglement at emission.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.14358",
  "author_total": 1,
  "authors": [
    {
      "name": "Isaac Vidaña"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/csdpes24kz6q9.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.14358",
  "fulltext_url": null,
  "id": "csdpes24kz6q9",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.14358",
  "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",
      "nucl-th"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3106|High-Energy Particle Collisions Research"
    ]
  ],
  "openalex": "W7221830427",
  "pdf_url": "https://arxiv.org/pdf/2610.14358",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/csdpes24kz6q9.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:06Z",
      "native_id": "2610.14358",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.14358"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    },
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Separating entanglement at emission from femtoscopic correlations",
  "title_text": "Separating entanglement at emission from femtoscopic correlations",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:06Z",
  "url": "https://research.draconitic.com/paper/csdpes24kz6q9",
  "venue": "arXiv",
  "versions": []
}