{
  "id": "1503.00052",
  "version": "v1",
  "published": "2015-02-28T01:44:07.000Z",
  "updated": "2015-02-28T01:44:07.000Z",
  "title": "Entanglement of non-equilibrium finite-spin systems with external fields",
  "authors": [
    "Koichi Nakagawa"
  ],
  "comment": "10 pages, 12 figures. arXiv admin note: substantial text overlap with arXiv:1410.6988",
  "categories": [
    "cond-mat.stat-mech",
    "quant-ph"
  ],
  "abstract": "We study entanglement of non-equilibrium finite-spin systems with non-competitive external fields using thermofield dynamics (TFD) for both traditional and extended cases. The extended density matrix and the extended entanglement entropy of the systems are derived in this formulation, and it is found that the effects of the external fields can be obtained for the entangled state through this approach. Consequently, the applicability of the TFD-based method to describe quantum entanglement is confirmed in both non-dissipative and dissipative cases.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2015-02-28T01:44:07.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "non-equilibrium finite-spin systems",
      "quantum entanglement",
      "study entanglement",
      "non-competitive external fields",
      "extended entanglement entropy"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2015arXiv150300052N",
      "inspire": 1405748
    }
  }
}