{
  "annotation_id": "ffc83e41-b3e2-46f3-8668-c4e2f36bdb7e",
  "date_created": "2026-03-02T18:02:16.224000Z",
  "date_modified": "2026-03-02T18:02:16.224000Z",
  "file_hash": "335e35cdbe8f2e521ac9aeea3ef66182d9c8c70132da82e718e0d36e538208f4",
  "private": false,
  "record": {
    "abstract": "We study the dynamics of a single excitation in an infinite XXZ spin chain,\nwhich is launched from the origin. We study the time evolution of the spread of\nentanglement in the spin chain and obtain an expression for the second order\nspatial moment of concurrence, about the origin, for both ordered and\ndisordered chains. In this way, we show that a finite central disordered region\ncan lead to sustained superballistic growth in the second order spatial moment\nof entanglement within the chain.",
    "arxiv_id": "quant-ph/0506053",
    "authors": [
      "J. Fitzsimons",
      "J. Twamley"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.72.050301",
    "title": "Superballistic Diffusion of Entanglement in Disordered Spin Chains",
    "url": "https://arxiv.org/abs/quant-ph/0506053"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "c5f166b5-5e2b-467a-8048-2b36efc5ac46",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}