{
  "annotation_id": "a401ff41-b8cd-45a5-b93a-ffce98ccc570",
  "date_created": "2026-03-02T18:01:18.557000Z",
  "date_modified": "2026-03-02T18:01:18.557000Z",
  "file_hash": "aa512cddac57273b1fe4d423ca71eadccb1ff70bc0655e8c5f73737711ef2bc4",
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  "record": {
    "abstract": "A compact analysis of development and prospects in the study of the\ntunnelling evolution is given. A new systematization of various approaches to\ndefining tunnelling times in the light of time as a quantum mechanical\nobservable is proposed. The problem of superluminal group velocities, without\nviolations of special relativity, is also taken in account. Then a particular\nattention is devoted to the presentation of new results on the analogy between\nparticle and photon tunnelling and analysis of the causality validity during\ntunnelling. [PACS nos. 03.40.Kf, 03.50.De, 41.20.Jb, 41.20.Bt, 42.25.Bs,\n03.30.+p, 03.65.-w].",
    "arxiv_id": "physics/9612004",
    "authors": [
      "V. S. Olkhovsky",
      "A. Agresti"
    ],
    "categories": [
      "physics.gen-ph"
    ],
    "title": "Developments in time analysis of particle and photon tunnelling",
    "url": "https://arxiv.org/abs/physics/9612004"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f0473c67-5d36-44e5-ba08-1bf03b50b488",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}