{
  "annotation_id": "618b6302-94f2-4793-9325-5a5c656d3321",
  "date_created": "2026-03-02T18:02:06.451000Z",
  "date_modified": "2026-03-02T18:02:06.451000Z",
  "file_hash": "a59afbea9632d1e36e09bfb194ae219470d7fb51692668d4133d5052f8be222a",
  "private": false,
  "record": {
    "abstract": "The distinction between proper and improper mixtures is a staple of the\ndiscussion of foundational questions in quantum mechanics. Here we note an\nanalogous distinction in the context of the theory of entanglement. The\nterminology of `proper\u0027 versus `improper\u0027 separability is proposed to mark the\ndistinction.",
    "arxiv_id": "quant-ph/0402094",
    "authors": [
      "Christopher G Timpson",
      "Harvey R Brown"
    ],
    "categories": [
      "quant-ph"
    ],
    "journal_ref": "International Journal of Quantum Information 3(4):679-690 (2005)",
    "title": "Proper and Improper Separability",
    "url": "https://arxiv.org/abs/quant-ph/0402094"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "5d2a5de3-38d3-4f18-a2e6-738667662436",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}