{
  "annotation_id": "0d2ed36e-54d0-43cc-bae5-0cc97d00862a",
  "date_created": "2026-03-02T18:02:34.488000Z",
  "date_modified": "2026-03-02T18:02:34.488000Z",
  "file_hash": "6ae5e3fd1763dc0af5f9b823fa617d41497eba4ce098cea7706f1b47077c87d0",
  "private": false,
  "record": {
    "abstract": "A phenomenological model of the time evolution of a particle wavepacket is\npresented that is subject to scattering event with small momentum transfer. It\nis suited for three dimensions and allows for an additional potential. For a\nrandom value of a phase parameter, it is equivalent to the decoherence by\nscattering off plane wave field states. Imposing some condition on the same\nphase parameter, the model delivers definite outcomes in a local pointer base.\nCommon sense notions about the quantum-classical transition are readily\nobtained: Decoherent free particle solutions are localized constant-width\nwavepackets, quantum barrier scattering results in random reflection and\ntransmission. The scattering process assumed in the phenomenological model is\nrealized by scattering of a particle pair interacting by a force-distance law\nwith small momentum transfer. Particles are localized not by decoherence but by\na classical lensing effect. Schmidt paths in the Schmidt representation of the\nmultiparticle state are products of single-particle wavepackets. Therefore the\nmodel has a natural \u0027Many Worlds\u0027 interpretation, identifying each Schmidt path\nwith a classical branch. Different runs of the phenomenological model map the\nstate of the same particular particle within different branches.",
    "arxiv_id": "quant-ph/0702197",
    "authors": [
      "Ivo Knittel"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Particle Localization by Decoherence and Classical Lensing",
    "url": "https://arxiv.org/abs/quant-ph/0702197"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "ac9a4830-8c67-49b5-bcd4-0a50a3cd89ce",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}