{
  "annotation_id": "dc3abd49-b72a-46a7-8cd9-d030ffbe0f5e",
  "date_created": "2026-03-02T18:01:45.782000Z",
  "date_modified": "2026-03-02T18:01:45.782000Z",
  "file_hash": "dd9cf4e249b4deb431b2ac5609e15d083f2dd6363314809995c8048422163e03",
  "private": false,
  "record": {
    "abstract": "A geometrical picture of separability of 2 x 2 composite quantum systems,\nshowing the region of separable density matrices in the space of hermitian\nmatrices, is given. It rests on the criterion of separability given by Peres,\nand it is an extension of the ``Horodecki diagram\u0027\u0027 and the ``stella\noctangula\u0027\u0027 described by Aravind.",
    "arxiv_id": "quant-ph/0109099",
    "authors": [
      "AAsa Ericsson"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1016/S0375-9601(02)00181-0",
    "title": "Separability and the stella octangula",
    "url": "https://arxiv.org/abs/quant-ph/0109099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "568ac1ec-869f-4196-b0d8-626d145ad175",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}