{
  "annotation_id": "ba1f54e3-c1fa-482a-ab0a-80717844dac8",
  "date_created": "2026-03-02T18:02:23.824000Z",
  "date_modified": "2026-03-02T18:02:23.824000Z",
  "file_hash": "81321ea766be223ade64b397810cf2ce122aabc9b06eeeabd3412b0eb7bea480",
  "private": false,
  "record": {
    "abstract": "We obtain a new lower bound on the radius of the largest ball of separable\nunnormalized states around the identity matrix for a 3-qubit system. This also\nenables us to improve the corresponding lower bounds for multi-qubit systems.\nThese bounds are approximately 5% better than the previously known ones. As a\nby-product, we compute the radius of the largest ball that fits into the triple\nprojective tensor product of the unit ball in R^3.",
    "arxiv_id": "quant-ph/0601201",
    "authors": [
      "Roland Hildebrand"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Separable balls around the maximally mixed state for a 3-qubit system",
    "url": "https://arxiv.org/abs/quant-ph/0601201"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c2859436-549c-48ab-9b07-74add287d29e",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}