{
  "annotation_id": "71343354-388d-4257-8eda-cf9aaaef95fd",
  "date_created": "2026-03-02T18:02:20.541000Z",
  "date_modified": "2026-03-02T18:02:20.541000Z",
  "file_hash": "477da34770aa4b469e35d73f4aa1ce321af305b10b14fcc5aac8b1956be81b22",
  "private": false,
  "record": {
    "abstract": "The so-called entanglement with vacuum is not a property of the Fock space,\nbut of some rather pathological representations of CCR/CAR algebras. In some\nother Fock space representations the notion simply does not exist. We have\nchecked all the main Gedanken experiments where the notion of entanglement with\nvacuum was used, and found that all the calculations could be performed at a\nrepresentation-independent level. In particular any such experiment can be\nformulated in a Fock-space representation where the notion of entanglement with\nvacuum is meaningless. So, for the moment there is no single experiment where\nthe notion is needed, and probably it is simply unphysical.",
    "arxiv_id": "quant-ph/0507151",
    "authors": [
      "Marcin Pawlowski",
      "Marek Czachor"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "On Entanglement with Vacuum",
    "url": "https://arxiv.org/abs/quant-ph/0507151"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "bc2b6636-fec5-4859-a5d4-63fec0a092c9",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}