{
  "annotation_id": "cc982778-084d-411b-a808-539ebf3ffbca",
  "date_created": "2026-03-02T18:01:21.911000Z",
  "date_modified": "2026-03-02T18:01:21.911000Z",
  "file_hash": "49a79096c20462d5b33c3af1b55cb8bf360bd5702837d9ee8e7ddbfe9d2ce109",
  "private": false,
  "record": {
    "abstract": "The fact that the Dirac equation is linear in the space and time derivatives\nleads to the coupling of spin and orbital angular momenta that is of a pure\nrelativistic nature. We illustrate this fact by computing the solutions of the\nDirac equation in an infinite spherical well, which allows to go from the\nrelativistic to the non-relativistic limit by just varying the radius of the\nwell.",
    "arxiv_id": "physics/9809015",
    "authors": [
      "P. Alberto",
      "M. Fiolhais",
      "M. Oliveira"
    ],
    "categories": [
      "physics.ed-ph",
      "quant-ph"
    ],
    "doi": "10.1088/0143-0807/19/6/008",
    "title": "On the relativistic L-S coupling",
    "url": "https://arxiv.org/abs/physics/9809015"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "b2668d48-00c4-43f9-afaf-d14abf98fcd7",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}