{
  "annotation_id": "531ae2e9-31c2-4cf0-b446-670ab4970a6c",
  "date_created": "2026-03-02T18:02:30.965000Z",
  "date_modified": "2026-03-02T18:02:30.965000Z",
  "file_hash": "b22fee313d4553ed13802afadcc1939d4b993ea176bc60307bc102594bf7c413",
  "private": false,
  "record": {
    "abstract": "We investigate a fully quantum mechanical spin model for the detection of a\nmoving particle. This model, developed in earlier work, is based on a\ncollection of spins at fixed locations and in a metastable state, with the\nparticle locally enhancing the coupling of the spins to an environment of\nbosons. Appearance of bosons from particular spins signals the presence of the\nparticle at the spin location, and the first boson indicates its arrival. The\noriginal model used discrete boson modes. Here we treat the continuum limit,\nunder the assumption of the Markov property, and calculate the arrival-time\ndistribution for a particle to reach a specific region.",
    "arxiv_id": "quant-ph/0609057",
    "authors": [
      "Gerhard C. Hegerfeldt",
      "Jens Timo Neumann",
      "Lawrence S. Schulman"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/39/46/014",
    "journal_ref": "J. Phys. A: Math. Gen. 39 (2006) 14447-14463",
    "title": "Investigation of a quantum mechanical detector model for moving,   spread-out particles",
    "url": "https://arxiv.org/abs/quant-ph/0609057"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3f55a1a4-df49-4e2c-946d-f56857a03106",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}