{
  "annotation_id": "717e9fda-33ba-42f9-83cc-c236ce1ef855",
  "date_created": "2026-03-02T18:02:16.674000Z",
  "date_modified": "2026-03-02T18:02:16.674000Z",
  "file_hash": "87b5e1450a51243606d0b71d48c2badcab3dcf0f2234dc336c21f3ecd1d7d3a8",
  "private": false,
  "record": {
    "abstract": "We propose concurrence classes for general pure multipartite states based on\nan orthogonal complement of a positive operator valued measure on quantum\nphase. In particular, we construct $W^{m}$ class, $GHZ^{m}$, and $GHZ^{m-1}$\nclass concurrences for general pure $m$-partite states. We give explicit\nexpressions for $W^{3}$ and $GHZ^{3}$ class concurrences for general pure\nthree-partite states and for $W^{4}$, $GHZ^{4}$, and $GHZ^{3}$ class\nconcurrences for general pure four-partite states.",
    "arxiv_id": "quant-ph/0505109",
    "authors": [
      "Hoshang Heydari"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1088/0305-4470/38/40/012",
    "journal_ref": "J. Phys. A: Math. Gen. 38 (2005) 8667-8679",
    "title": "Concurrence classes for general pure multipartite states",
    "url": "https://arxiv.org/abs/quant-ph/0505109"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "0526dcb2-717a-4a75-8f76-235e91b459bf",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}