{
  "annotation_id": "c5b124a5-0c8b-4c06-a005-7efc21cbfd1f",
  "date_created": "2026-03-02T18:02:27.461000Z",
  "date_modified": "2026-03-02T18:02:27.461000Z",
  "file_hash": "4bc6c67595d4870bfcdea5c825eed2fae670cf22beb470c42f4b29046d2e7202",
  "private": false,
  "record": {
    "abstract": "A formula to evaluate the entanglement in an one-dimensional ferrimagnetic\nsystem is derived. Based on the formula, we find that the thermal entanglement\nin a small size spin-1/2 and spin-s ferrimagnetic chain is rather robust\nagainst temperature, and the threshold temperature may be arbitrarily high when\ns is sufficiently large. This intriguing result answers unambiguously a\nfundamental question: ``can entanglement and quantum behavior in physical\nsystems survive at arbitrary high temperatures?\"",
    "arxiv_id": "quant-ph/0604099",
    "authors": [
      "Xiaoguang Wang",
      "Z. D. Wang"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.73.064302",
    "journal_ref": "Phys. Rev. A73, 064302(2006)",
    "title": "Thermal Entanglement in Ferrimagnetic Chains",
    "url": "https://arxiv.org/abs/quant-ph/0604099"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "e3445dfb-42f2-4f47-ba57-633f223154c0",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}