{
  "id": "1009.3659",
  "version": "v1",
  "published": "2010-09-19T20:08:01.000Z",
  "updated": "2010-09-19T20:08:01.000Z",
  "title": "Disentanglement and Decoherence without dissipation at non-zero temperatures",
  "authors": [
    "G. W. Ford",
    "R. F. O'Connell"
  ],
  "comment": "3 pages",
  "journal": "Phys.Scr. 82,038112 (2010)",
  "categories": [
    "quant-ph"
  ],
  "abstract": "Decoherence is well understood, in contrast to disentanglement. According to common lore, irreversible coupling to a dissipative environment is the mechanism for loss of entanglement. Here, we show that, on the contrary, disentanglement can in fact occur at large enough temperatures $T$ even for vanishingly small dissipation (as we have shown previously for decoherence). However, whereas the effect of $T$ on decoherence increases exponentially with time, the effect of $T$ on disentanglement is constant for all times, reflecting a fundamental difference between the two phenomena. Also, the possibility of disentanglement at a particular $T$ increases with decreasing initial entanglement.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2010-09-19T20:08:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "disentanglement",
      "non-zero temperatures",
      "decreasing initial entanglement",
      "fundamental difference",
      "common lore"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "doi": "10.1088/0031-8949/82/03/038112",
      "journal": "Physica Scripta",
      "year": 2010,
      "month": "Sep",
      "volume": 82,
      "number": 3,
      "pages": "038112"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 3,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2010PhyS...82c8112F"
    }
  }
}