{
  "id": "0910.0255",
  "version": "v1",
  "published": "2009-10-02T19:56:43.000Z",
  "updated": "2009-10-02T19:56:43.000Z",
  "title": "Quench dynamics as a probe of quantum criticality",
  "authors": [
    "R. A. Barankov"
  ],
  "comment": "4 pages",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.quant-gas"
  ],
  "abstract": "Quantum critical points of many-body systems can be characterized by studying response of the ground-state wave function to the change of the external parameter, encoded in the ground-state fidelity susceptibility. This quantity characterizes the quench dynamics induced by sudden change of the parameter. In this framework, I analyze scaling relations concerning the probability of excitation and the excitation energy, with the quench amplitude of this parameter. These results are illustrated in the case of one-dimensional sine-Gordon model.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2009-10-02T19:56:43.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quench dynamics",
      "quantum criticality",
      "one-dimensional sine-gordon model",
      "ground-state wave function",
      "ground-state fidelity susceptibility"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 4,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2009arXiv0910.0255B"
    }
  }
}