{
  "annotation_id": "d4b4c78d-eb1d-4b31-b5d1-0d2b6c525997",
  "date_created": "2026-03-02T18:02:12.707000Z",
  "date_modified": "2026-03-02T18:02:12.707000Z",
  "file_hash": "d49c7c0bc81d815f77cec67a7bd8af7736acafc28a6647cfe6ea123f2b62b6ed",
  "private": false,
  "record": {
    "abstract": "We consider the ground state of the XX chain that is constrained to carry a\ncurrent of energy. The von Neumann entropy of a block of $L$ neighboring spins,\ndescribing entanglement of the block with the rest of the chain, is computed.\nRecent calculations have revealed that the entropy in the XX model diverges\nlogarithmically with the size of the subsystem. We show that the presence of\nthe energy current increases the prefactor of the logarithmic growth. This\nresult indicates that the emergence of the energy current gives rise to an\nincrease of entanglement.",
    "arxiv_id": "quant-ph/0412118",
    "authors": [
      "V. Eisler",
      "Z. Zimboras"
    ],
    "categories": [
      "quant-ph",
      "cond-mat.stat-mech"
    ],
    "doi": "10.1103/PhysRevA.71.042318",
    "journal_ref": "PRA 71, 042318 (2005)",
    "title": "Entanglement in the XX spin chain with an energy current",
    "url": "https://arxiv.org/abs/quant-ph/0412118"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "90d7f3a4-0ade-4543-8231-a335dcd33810",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}