{
  "annotation_id": "c4c01e02-5ef2-4291-bb4c-a24acefbe575",
  "date_created": "2026-03-02T18:02:16.728000Z",
  "date_modified": "2026-03-02T18:02:16.728000Z",
  "file_hash": "79a662ffeec8026397fc745c4b632956f7a870e7480fd79e1ce89a6d50078031",
  "private": false,
  "record": {
    "abstract": "We investigate the von Neumann entanglement entropy as function of the size\nof a subsystem for permutation invariant ground states in models with finite\nnumber of states per site, e.g., in quantum spin models. We demonstrate that\nthe entanglement entropy of $n$ sites in a system of length $L$ generically\ngrows as $\\sigma\\log_{2}[2\\pi en(L-n)/L]+C$, where $\\sigma$ is the on-site spin\nand $C$ is a function depending only on magnetization.",
    "arxiv_id": "quant-ph/0506209",
    "authors": [
      "Vladislav Popkov",
      "Mario Salerno",
      "Gunter Schuetz"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.stat-mech"
    ],
    "doi": "10.1103/PhysRevA.72.032327",
    "journal_ref": "Phys. Rev. E72, 032327 (2005)",
    "title": "Entangling power of permutation invariant quantum states",
    "url": "https://arxiv.org/abs/quant-ph/0506209"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fd6fbbff-94cd-4265-9ddc-9543c20fc0e9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}