{
  "abstract": "Deep thermalization indicates the emergence of universal ensembles of pure states in a subsystem after measuring its environment. We investigate this phenomenon in a free-fermion chain using local measurements that preserve Gaussianity and break particle-number conservation. Although the measurement outcomes provide partial information about local conserved charges within a finite subsystem, we argue that this information becomes negligible in the thermodynamic limit. This effective non-revelation underlies the emergence of a fermionic Gaussian Scrooge ensemble, determined by the subsystem's generalized Gibbs ensemble. We construct this universal ensemble directly at the subsystem level and provide numerical evidence that it describes the late-time projected ensemble at finite temperature. Our results extend the description of thermalization in non-interacting integrable systems beyond the reduced density matrix to universal statistics of conditional pure states.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.10279",
  "author_total": 4,
  "authors": [
    {
      "name": "Angelo Russotto"
    },
    {
      "name": "Katja Klobas"
    },
    {
      "name": "Pasquale Calabrese"
    },
    {
      "name": "Bruno Bertini"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bym3r80hznfdr.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.10279",
  "fulltext_url": null,
  "id": "bym3r80hznfdr",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.10279",
  "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",
      "cond-mat.stat-mech"
    ],
    [
      "arxiv",
      "quant-ph"
    ],
    [
      "openalex",
      "3107|Quantum many-body systems"
    ]
  ],
  "openalex": "W7221062110",
  "pdf_url": "https://arxiv.org/pdf/2610.10279",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-26",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/bym3r80hznfdr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:35:35Z",
      "native_id": "2610.10279",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.10279"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.stat-mech",
      "subfield": "statistical-nonlinear"
    }
  ],
  "title": "Gaussian Scrooge Ensemble from Deep Thermalization in Free-Fermions",
  "title_text": "Gaussian Scrooge Ensemble from Deep Thermalization in Free-Fermions",
  "type": "preprint",
  "updated_at": "2026-10-30T12:35:35Z",
  "url": "https://research.draconitic.com/paper/bym3r80hznfdr",
  "venue": "arXiv",
  "versions": []
}