{
  "annotation_id": "0d80fc64-5773-41cb-9d88-f40b7c96efbb",
  "date_created": "2026-03-02T18:02:31.198000Z",
  "date_modified": "2026-03-02T18:02:31.198000Z",
  "file_hash": "dc87617934ac0c60cfc0ab141e00cac39a67ce782d3ba5c1c1c85e2749b43418",
  "private": false,
  "record": {
    "abstract": "The coordinate of a harmonic oscillator is measured at a time chosen at\nrandom among three equiprobable instants: now, after one third of the period,\nor after two thirds. The (total) probability that the outcome is positive\ndepends on the state of the oscillator. In the classical case the probability\nvaries between 1/3 and 2/3, but in the quantum case -- between 0.29 and 0.71.",
    "arxiv_id": "quant-ph/0611147",
    "authors": [
      "Boris Tsirelson"
    ],
    "categories": [
      "quant-ph",
      "math.PR"
    ],
    "title": "How often is the coordinate of a harmonic oscillator positive?",
    "url": "https://arxiv.org/abs/quant-ph/0611147"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "71eb9b26-0614-4659-bbf5-5af520678f00",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}