{
  "annotation_id": "1e6f3619-9111-4204-b498-cc1451710f5c",
  "date_created": "2026-03-02T18:02:23.727000Z",
  "date_modified": "2026-03-02T18:02:23.727000Z",
  "file_hash": "a6b09ae20f178d378f3702ba08d3322aefd09d90fae3db93caf084b6233a9789",
  "private": false,
  "record": {
    "abstract": "Density functional theory (DFT) is shown to provide a novel conceptual and\ncomputational framework for entanglement in interacting many-body quantum\nsystems. DFT can, in particular, shed light on the intriguing relationship\nbetween quantum phase transitions and entanglement. We use DFT concepts to\nexpress entanglement measures in terms of the first or second derivative of the\nground state energy. We illustrate the versatility of the DFT approach via a\nvariety of analytically solvable models. As a further application we discuss\nentanglement and quantum phase transitions in the case of mean field\napproximations for realistic models of many-body systems.",
    "arxiv_id": "quant-ph/0512031",
    "authors": [
      "L. -A. Wu",
      "M. S. Sarandy",
      "D. A. Lidar",
      "L. J. Sham"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.stat-mech",
      "physics.chem-ph"
    ],
    "doi": "10.1103/PhysRevA.74.052335",
    "journal_ref": "Phys. Rev. A 74, 052335 (2006)",
    "title": "Linking entanglement and quantum phase transitions via density   functional theory",
    "url": "https://arxiv.org/abs/quant-ph/0512031"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b42a62a9-4b56-4aed-a626-236003d8488f",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}