{
  "annotation_id": "9ebbc006-3fc9-499b-a40f-27e0059d2b51",
  "date_created": "2026-03-02T18:02:03.465000Z",
  "date_modified": "2026-03-02T18:02:03.465000Z",
  "file_hash": "7415558fb464afd32fc0d3618b07856fd10637269882b6536b99af2e70645d8c",
  "private": false,
  "record": {
    "abstract": "The local entanglement $E_v$ of the one-dimensional Hubbard model is studied\non the basis of its Bethe-ansatz solution. The relationship between the local\nentanglement and the on-site Coulomb interaction $U$ is obtained. Our results\nshow that $E_v$ is an even analytic function of $U$ at half-filling and it\nreaches a maximum at the critical point U=0. The variation of the local\nentanglement with the filling factor shows that the ground state with maximal\nsymmetry possesses maximal entanglement. The magnetic field makes the local\nentanglement to decrease and approach to zero at saturated magnetization. The\non-site Coulomb interaction always suppresses the local entanglement.",
    "arxiv_id": "quant-ph/0310030",
    "authors": [
      "Shi-Jian Gu",
      "You-Quan Li",
      "Hai-Qing Lin"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevLett.93.086402",
    "journal_ref": "Phys. Rev. Lett 93, 086402 (2004)",
    "title": "Local entanglement and quantum phase transition in the Hubbard model",
    "url": "https://arxiv.org/abs/quant-ph/0310030"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e8ceeee9-f5a8-46a4-96d7-a81b71041402",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}