{
  "annotation_id": "bc7305b5-edd9-4413-ab25-f6a97c8b9af9",
  "date_created": "2026-03-02T18:02:10.002000Z",
  "date_modified": "2026-03-02T18:02:10.002000Z",
  "file_hash": "4fca0fa5c55d6a43ab3d47701fd1bb5da974beaf869aad166933758f2b0c75e5",
  "private": false,
  "record": {
    "abstract": "We propose an approach which allows to construct and use a potential function\nwritten in terms of an angle variable to describe interacting spin systems. We\nshow how this can be implemented in the Lipkin-Meshkov-Glick, here considered a\nparadigmatic spin model. It is shown how some features of the energy gap can be\ninterpreted in terms of a spin tunneling. A discrete Wigner function is\nconstructed for a symmetric combination of two states of the model and its time\nevolution is obtained. The physical information extracted from that function\nreinforces our description of phase oscillations in a potential.",
    "arxiv_id": "quant-ph/0407170",
    "authors": [
      "D. Galetti",
      "C. L. Lima",
      "B. M. Pimentel"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Quantum spin tunneling in a soluble quasi-spin model: An angle-based   potential description",
    "url": "https://arxiv.org/abs/quant-ph/0407170"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "2f6b6718-2dca-4394-8765-1ddc64d72c6e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}