{
  "annotation_id": "1676561d-781f-4a33-9c08-86089abeb9f7",
  "date_created": "2026-03-02T18:01:42.701000Z",
  "date_modified": "2026-03-02T18:01:42.701000Z",
  "file_hash": "bf08b2c8ee9028d63b119ec02e71bb261ffa3806dbc752f0e56fb1f973df2400",
  "private": false,
  "record": {
    "abstract": "Contrary to the opinion of J. Polchinski [Phys.Rev.Lett. {\\bf 66}, 397-400\n(1991)], the phenomenon of superluminal messages in nonlinear versions of\nquantum mechanics is not a specific difficulty in a class of theories\nformulated by S. Weinberg [Ann.Phys. (N.Y.), {\\bf 194}, 336-386 (1989)]. It\nappears in all schemes which try to enlarge the orthodox class of observables,\nwhile conserving the traditional structure of the pure and mixed states.",
    "arxiv_id": "quant-ph/0012041",
    "authors": [
      "Bogdan Mielnik"
    ],
    "categories": [
      "quant-ph",
      "hep-th"
    ],
    "title": "Comments on: ``Weinberg\u0027s Nonlinear Quantum Mechanics and   Einstein-Podolsky-Rosen paradox\u0027\u0027, by Joseph Polchinski",
    "url": "https://arxiv.org/abs/quant-ph/0012041"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "3185c5ab-f896-43a7-a3d6-2facc610be36",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}