{
  "annotation_id": "521179d4-518c-4a78-a657-395898835a5f",
  "date_created": "2026-03-02T18:02:34.308000Z",
  "date_modified": "2026-03-02T18:02:34.308000Z",
  "file_hash": "91d40205992418bd7995d27bc25ea67f890a8e48f5db6ff26d6ac412c8ba2207",
  "private": false,
  "record": {
    "abstract": "The measurement of a spin-$\\half$ is modeled by coupling it to an apparatus,\nthat consists of an Ising magnetic dot coupled to a phonon bath. Features of\nquantum measurements are derived from the dynamical solution of the\nmeasurement, regarded as a process of quantum statistical mechanics.\nSchr\\\"odinger cat terms involving both the system and the apparatus, die out\nvery quickly, while the registration is a process taking the apparatus from its\ninitially metastable state to one of its stable final states. The occurrence of\nBorn probabilities can be inferred at the macroscopic level, by looking at the\npointer alone. Apparent non-unitary behavior of the measurement process is\nexplained by the arisal of small many particle correlations, that characterize\nrelaxation.",
    "arxiv_id": "quant-ph/0702135",
    "authors": [
      "Armen E. Allahverdyan",
      "Roger Balian",
      "Theo M. Nieuwenhuizen"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1142/9789812771186_0004",
    "title": "The Quantum Measurement Process: Lessons from an Exactly Solvable Model",
    "url": "https://arxiv.org/abs/quant-ph/0702135"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "fd438f4d-68d9-4117-95e9-52ec3a688098",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}