{
  "annotation_id": "8c0fff30-71c5-4f9e-8d18-6048150a57a2",
  "date_created": "2026-03-02T18:02:27.296000Z",
  "date_modified": "2026-03-02T18:02:27.296000Z",
  "file_hash": "39c8af95f1bb17744c37b20d686424f6654f09682ef4406bde5e7ed3b4d3df9f",
  "private": false,
  "record": {
    "abstract": "The entanglement in a general Heisenberg antiferromagnetic chain of arbitrary\nspin-$s$ is investigated. The entanglement is witnessed by the thermal energy\nwhich equals to the minimum energy of any separable state. There is a\ncharacteristic temperature below that an entangled thermal state exists. The\ncharacteristic temperature for thermal entanglement is increased with spin $s$.\nWhen the total number of lattice is increased, the characteristic temperature\ndecreases and then approaches a constant. This effect shows that the thermal\nentanglement can be detected in a real solid state system of larger number of\nlattices for finite temperature. The comparison of negativity and entanglement\nwitness is obtained from the separability of the unentangled states. It is\nfound that the thermal energy provides a sufficient condition for the existence\nof the thermal entanglement in a spin-$s$ antiferromagnetic Heisenberg chain.",
    "arxiv_id": "quant-ph/0605107",
    "authors": [
      "Xiang Hao",
      "Shiqun Zhu"
    ],
    "categories": [
      "quant-ph"
    ],
    "title": "Entanglement in a Spin-$s$ Antiferromagnetic Heisenberg Chain",
    "url": "https://arxiv.org/abs/quant-ph/0605107"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "d4d37a21-e48c-475a-9065-ad51052d0e55",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}