{
  "annotation_id": "8e3ea64a-86d5-4992-b6bd-a1d47105184e",
  "date_created": "2026-03-02T18:02:41.735000Z",
  "date_modified": "2026-03-02T18:02:41.735000Z",
  "file_hash": "a53aa0f6dc78126423fc27cf850122de988fc1c257695652eb87b3a7d0076890",
  "private": false,
  "record": {
    "abstract": "The current density for a freely evolving state without negative momentum\ncomponents can temporarily be negative. The operational arrival time\ndistribution, defined by the absorption rate of an ideal detector, is\ncalculated for a model detector and compared with recently proposed\ndistributions. Counterintuitive features of the backflow regime are discussed.",
    "arxiv_id": "quant-ph/9803087",
    "authors": [
      "J. G. Muga",
      "J. P. Palao",
      "C. R. Leavens"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0375-9601(99)00020-1",
    "journal_ref": "Phys.Lett. A253 (1999) 21",
    "title": "Quantum arrival time measurement and backflow effect",
    "url": "https://arxiv.org/abs/quant-ph/9803087"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "194f5a2a-7920-4ee9-b4c8-bff52cddadbd",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}