{
  "annotation_id": "d463d73a-baed-4e10-94dd-51fa9d630b1c",
  "date_created": "2026-03-02T18:02:30.290000Z",
  "date_modified": "2026-03-02T18:02:30.290000Z",
  "file_hash": "331533bcf6b60fef422efacc25b717025d4fc10611ed6f5aef4630773d6be106",
  "private": false,
  "record": {
    "abstract": "Three postulates are discussed: first that well-defined properties cannot be\nassigned to an isolated system, secondly that quantum unitary evolution is\natemporal, and thirdly that some physical processes are never reversed. It is\nargued that these give useful insight into quantum behaviour. The first\npostulate emphasizes the fundamental role in physics of interactions and\ncorrelations, as opposed to internal properties of systems. Statements about\nphysical interactions can only be framed in a context of further interactions.\nThis undermines the possibility of objectivity in physics. However, quantum\nmechanics retains objectivity through the combination of the second and third\npostulates. A rule is given for determining the circumstances in which physical\nevolution is non-unitary. This rule appeals to the absence of spacetime loops\nin the future evolution of a set of interacting systems. A single universe\nundergoing non-unitary evolution is a viable interpretation.",
    "arxiv_id": "quant-ph/0611047",
    "authors": [
      "Andrew M. Steane"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/1751-8113/40/12/S21",
    "title": "Context, spacetime loops, and the interpretation of quantum mechanics",
    "url": "https://arxiv.org/abs/quant-ph/0611047"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f0b7b611-3a4b-4ca7-9fd6-049c36e7e9b2",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}