{
  "id": "1410.6988",
  "version": "v1",
  "published": "2014-10-26T05:23:10.000Z",
  "updated": "2014-10-26T05:23:10.000Z",
  "title": "Entanglement Entropies of Non-Equilibrium Finite-Spin Systems",
  "authors": [
    "Koichi Nakagawa"
  ],
  "comment": "7 pages, 4figures",
  "categories": [
    "cond-mat.stat-mech",
    "quant-ph"
  ],
  "abstract": "For the purpose of clarifying a new approach to understanding quantum entanglement using thermofield dynamics (TFD), entanglement entropies of non-equilibrium finite-spin systems are examined for both traditional and extended cases. The extended entanglement entropy, $\\hat{S}$, is derived, and it is found that the conditions for the maximum entangled state can be obtained through this approach. The capacity of the TFD-based method to distinguish between states in quantum systems is confirmed.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2014-10-26T05:23:10.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "non-equilibrium finite-spin systems",
      "maximum entangled state",
      "understanding quantum entanglement",
      "quantum systems",
      "thermofield dynamics"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2014arXiv1410.6988N"
    }
  }
}