{
  "id": "quant-ph/0406162",
  "version": "v1",
  "published": "2004-06-22T17:10:58.000Z",
  "updated": "2004-06-22T17:10:58.000Z",
  "title": "A new inequality for the von Neumann entropy",
  "authors": [
    "Noah Linden",
    "Andreas Winter"
  ],
  "comment": "8 pages, 1 eps figure",
  "journal": "Commun Math Phys, vol 259, pp 129-138 (2005).",
  "doi": "10.1007/s00220-005-1361-2",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Strong subadditivity of von Neumann entropy, proved in 1973 by Lieb and Ruskai, is a cornerstone of quantum coding theory. All other known inequalities for entropies of quantum systems may be derived from it. Here we prove a new inequality for the von Neumann entropy which we prove is independent of strong subadditivity: it is an inequality which is true for any four party quantum state, provided that it satisfies three linear relations (constraints) on the entropies of certain reduced states.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2004-06-22T17:10:58.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "von neumann entropy",
      "inequality",
      "strong subadditivity",
      "party quantum state",
      "quantum coding theory"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Springer",
      "journal": "Commun. Math. Phys."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 8,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}