{
  "abstract": "Femtoscopic correlations in proton-proton and heavy ion collisions are commonly calculated using emission sources from microscopic transport models, where emitted particles are represented by classical phase-space points with simultaneously specified positions and momenta. This point-emitter picture neglects the finite phase-space localization required by quantum mechanics, which can become relevant when the localization scale approaches the femtoscopic source size, particularly in small collision systems. We formulate a quantum treatment by replacing each transport phase-space point with a minimum-uncertainty Gaussian phase-space distribution. Finite localization then induces both spatial and momentum smearing; in the presence of coordinate-momentum correlations, the latter produces a nontrivial modification of the emission source. Using proton--proton collisions at $\\sqrt{s}=7~\\mathrm{TeV}$ simulated with the microscopic Parton--Hadron--String Dynamics transport approach, we show that this effect significantly modifies the proton-pair source and its momentum correlation. Our results expose a quantum localization effect overlooked in transport-based femtoscopy and establish the regime in which the classical point-emitter approximation is valid.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10892",
  "author_total": 3,
  "authors": [
    {
      "name": "Jiaxing Zhao"
    },
    {
      "name": "Joerg Aichelin"
    },
    {
      "name": "Elena Bratkovskaya"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/0br7gsq0g4v00.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10892",
  "fulltext_url": null,
  "id": "0br7gsq0g4v00",
  "issns": [],
  "landing_url": "https://hal.science/hal-05829954v1",
  "language": "en",
  "licence": "CC0-1.0",
  "licence_label": "CC0",
  "licence_source": "article",
  "licence_url": "http://creativecommons.org/publicdomain/zero/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "hep-ph"
    ],
    [
      "arxiv",
      "nucl-th"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.phys.hphe"
    ],
    [
      "hal",
      "1.phys.nucl"
    ],
    [
      "openalex",
      "3106|High-Energy Particle Collisions Research"
    ]
  ],
  "openalex": "W7221152944",
  "pdf_url": "https://arxiv.org/pdf/2610.10892",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/0br7gsq0g4v00.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:18:00Z",
      "native_id": "hal-05829954",
      "source": "hal",
      "url": "https://hal.science/hal-05829954v1"
    },
    {
      "first_seen": "2026-10-30T12:27:54Z",
      "native_id": "2610.10892",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10892"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:hep-ph",
      "subfield": "high-energy"
    },
    {
      "field": "physics",
      "origin": "arxiv:nucl-th",
      "subfield": "nuclear"
    }
  ],
  "title": "Quantum Localization Limit of Transport-Based Femtoscopy",
  "title_text": "Quantum Localization Limit of Transport-Based Femtoscopy",
  "type": "preprint",
  "updated_at": "2026-10-30T12:27:54Z",
  "url": "https://research.draconitic.com/paper/0br7gsq0g4v00",
  "venue": "HAL",
  "versions": []
}