{
  "annotation_id": "881fcb4a-ead1-4d5c-b9b4-ca0b77026553",
  "date_created": "2026-03-02T18:01:45.124000Z",
  "date_modified": "2026-03-02T18:01:45.124000Z",
  "file_hash": "15bcbe32185d59951d32ae184ae535a52370bd6501262a4f1e2adf1908414835",
  "private": false,
  "record": {
    "abstract": "The Larmor precession of a neutral spinning particle in a magnetic field\nconfined to the region of a one dimensional-rectangular barrier is investigated\nfor both a nonrelativistic and a relativistic incoming particle. The spin\nprecession serves as a clock to measure the time spent by a quantum particle\ntraversing a potential barrier. With the help of general spin coherent state it\nis explicitly shown that the precession time is equal to the dwell time in both\nthe nonrelativistic and relativistic cases. We also present a numerical\nestimation of the precession time showing an apparent superluminal tunneling.",
    "arxiv_id": "quant-ph/0109001",
    "authors": [
      "Zhi-Jian Li",
      "J. Q. Liang",
      "D. H. Kobe"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.64.042112",
    "title": "Larmor precession and barrier tunneling time of a neutral spinning   particle",
    "url": "https://arxiv.org/abs/quant-ph/0109001"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "9dd02c6b-e986-4939-b4ad-7b1c926ff50d",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}