{
  "annotation_id": "1784bd51-75e4-4147-9c02-8b9b83cfde80",
  "date_created": "2026-03-02T18:02:00.271000Z",
  "date_modified": "2026-03-02T18:02:00.271000Z",
  "file_hash": "edcd87af8910a7043cc141a88b4b7fd41635f9b7e9b4175395884ab59d4d0492",
  "private": false,
  "record": {
    "abstract": "We introduce a generalization of entanglement based on the idea that\nentanglement is relative to a distinguished subspace of observables rather than\na distinguished subsystem decomposition. A pure quantum state is entangled\nrelative to such a subspace if its expectations are a proper mixture of those\nof other states. Many information-theoretic aspects of entanglement can be\nextended to the general setting, suggesting new ways of measuring and\nclassifying entanglement in multipartite systems. By going beyond the\ndistinguishable-subsystem framework, generalized entanglement also provides\nnovel tools for probing quantum correlations in interacting many-body systems.",
    "arxiv_id": "quant-ph/0305023",
    "authors": [
      "Howard Barnum",
      "Emanuel Knill",
      "Gerardo Ortiz",
      "Rolando Somma",
      "Lorenza Viola"
    ],
    "categories": [
      "quant-ph",
      "cond-mat"
    ],
    "doi": "10.1103/PhysRevLett.92.107902",
    "title": "A subsystem-independent generalization of entanglement",
    "url": "https://arxiv.org/abs/quant-ph/0305023"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d5d7b158-4908-45bf-a11a-c4e2396f0cb0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}