{
  "annotation_id": "6be2158d-d66c-4f70-9cd4-028307cdeb15",
  "date_created": "2026-03-02T18:02:34.495000Z",
  "date_modified": "2026-03-02T18:02:34.495000Z",
  "file_hash": "9afad04bf79834774050d23cc844545770f6b1c42ee9e712feec085b398d899d",
  "private": false,
  "record": {
    "abstract": "The geometric phase induced in an auxiliary qubit by a many-body system is\ncalculated and discussed. Two kinds of coupling between the auxiliary qubit and\nthe many-body system are considered, which lead to dephasing and dissipation in\nthe qubit, respectively. As an example, we consider the XY spin-chain\ndephasingly couple to a qubit, the geometric phase induced in the qubit is\npresented and discussed. The results show that the geometric phase might be\nused to signal the critical points of the many-body system, and it tends to\nzero with the parameters of the many-body system going away from the critical\npoints.",
    "arxiv_id": "quant-ph/0703049",
    "authors": [
      "X. X. Yi",
      "W. Wang"
    ],
    "categories": [
      "quant-ph"
    ],
    "doi": "10.1103/PhysRevA.75.032103",
    "journal_ref": "Phys. Rev. A 75, 032103 (2007)",
    "title": "Geometric phases induced in auxiliary qubits by many-body systems near   its critical points",
    "url": "https://arxiv.org/abs/quant-ph/0703049"
  },
  "schema_id": "dorsal/arxiv",
  "source": {
    "execution_id": "f249cb8b-95b1-4025-a61b-c0ed504ebc41",
    "id": "arXiv Dataset IDs",
    "type": "Model",
    "variant": "snapshot-2026-03-01",
    "version": "0.1.0"
  },
  "user_id": 1000002
}