{
  "annotation_id": "264f86a5-3d77-4aab-8af7-0d22e583bfeb",
  "date_created": "2026-03-02T18:02:51.296000Z",
  "date_modified": "2026-03-02T18:02:51.296000Z",
  "file_hash": "349d21a0faa197aa9f2e36c2d89dfa284403d9a2493aca09099ed56afd15ed9c",
  "private": false,
  "record": {
    "abstract": "We use group theory to derive the exact analytical expression of the\nferromagnetic ground states of the Hubbard model on a complete graph for\narbitrary lattice sites f and for arbitrary fillings $N$. We find that for\n$t\u003e0$ and for $N=f+1$ the ground state is maximally ferromagnetic with total\nspin $S=(f-1)/2$. For $N \u003e f+1$ the ground state is still ferromagnetic but\nbecomes degenerate with respect to $S$.",
    "arxiv_id": "solv-int/9603008",
    "authors": [
      "Mario Salerno"
    ],
    "categories": [
      "solv-int",
      "cond-mat",
      "nlin.SI"
    ],
    "doi": "10.1007/s002570050254",
    "journal_ref": "Z. Phys. B 101 (1996) 619",
    "title": "Ferromagnetic ground states of the Hubbard model on a complete graph",
    "url": "https://arxiv.org/abs/solv-int/9603008"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "1a0e54e2-fe8d-4192-b1ae-16fa6d9eaa7b",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}