{
  "annotation_id": "cc4c5330-9afd-4246-9f95-966514e2ab0a",
  "date_created": "2026-03-02T18:02:03.119000Z",
  "date_modified": "2026-03-02T18:02:03.119000Z",
  "file_hash": "4b78432598abb38d63ac24eff0b337db95ed2eca262490d14e58928d37207745",
  "private": false,
  "record": {
    "abstract": "We consider the entanglement properties of the quantum phase transition in\nthe single-mode superradiance model, involving the interaction of a boson mode\nand an ensemble of atoms. For infinite system size, the atom-field entanglement\nof formation diverges logarithmically with the correlation length exponent.\nUsing a continuous variable representation, we compare this to the divergence\nof the entropy in conformal field theories, and derive an exact expression for\nthe scaled concurrence and the cusp-like non-analyticity of the momentum\nsqueezing.",
    "arxiv_id": "quant-ph/0309027",
    "authors": [
      "Neill Lambert",
      "Clive Emary",
      "Tobias Brandes"
    ],
    "categories": [
      "quant-ph",
      "cond-mat"
    ],
    "doi": "10.1103/PhysRevLett.92.073602",
    "journal_ref": "Phys.Rev.Lett.92:073602,2004",
    "title": "Entanglement and the Phase Transition in Single Mode Superradiance",
    "url": "https://arxiv.org/abs/quant-ph/0309027"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "19b214a2-d806-4103-b9b1-338fffc563d4",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}