{
  "annotation_id": "05d241b9-9271-48ef-8d96-2511c3ab6d95",
  "date_created": "2026-03-02T18:02:09.928000Z",
  "date_modified": "2026-03-02T18:02:09.928000Z",
  "file_hash": "38d67cb3044d2a1afb9cef2d5c798573bf1da7ed0a154925b1f1911b30d9558c",
  "private": false,
  "record": {
    "abstract": "Strong subadditivity of von Neumann entropy, proved in 1973 by Lieb and\nRuskai, is a cornerstone of quantum coding theory. All other known inequalities\nfor entropies of quantum systems may be derived from it. Here we prove a new\ninequality for the von Neumann entropy which we prove is independent of strong\nsubadditivity: it is an inequality which is true for any four party quantum\nstate, provided that it satisfies three linear relations (constraints) on the\nentropies of certain reduced states.",
    "arxiv_id": "quant-ph/0406162",
    "authors": [
      "Noah Linden",
      "Andreas Winter"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1007/s00220-005-1361-2",
    "journal_ref": "Commun Math Phys, vol 259, pp 129-138 (2005).",
    "title": "A new inequality for the von Neumann entropy",
    "url": "https://arxiv.org/abs/quant-ph/0406162"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e9a273e4-c9b4-47da-89e2-52c14b95a537",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}