{
  "id": "0809.5113",
  "version": "v3",
  "published": "2008-09-30T04:45:13.000Z",
  "updated": "2009-03-05T05:59:44.000Z",
  "title": "Mutual Information and Boson Radius in c=1 Critical Systems in One Dimension",
  "authors": [
    "Shunsuke Furukawa",
    "Vincent Pasquier",
    "Jun'ichi Shiraishi"
  ],
  "comment": "4.1 pages, 5 figures",
  "journal": "Phys. Rev. Lett. 102, 170602 (2009)",
  "doi": "10.1103/PhysRevLett.102.170602",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.str-el",
    "hep-th",
    "quant-ph"
  ],
  "abstract": "We study the generic scaling properties of the mutual information between two disjoint intervals, in a class of one-dimensional quantum critical systems described by the c=1 bosonic field theory. A numerical analysis of a spin-chain model reveals that the mutual information is scale-invariant and depends directly on the boson radius. We interpret the results in terms of correlation functions of branch-point twist fields. The present study provides a new way to determine the boson radius, and furthermore demonstrates the power of the mutual information to extract more refined information of conformal field theory than the central charge.",
  "revisions": [
    {
      "version": "v3",
      "updated": "2009-03-05T05:59:44.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.67.Mn",
      "75.10.Pq",
      "05.70.Jk",
      "64.70.Tg"
    ],
    "keywords": [
      "mutual information",
      "boson radius",
      "branch-point twist fields",
      "one-dimensional quantum critical systems",
      "conformal field theory"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review Letters",
      "year": 2009,
      "month": "May",
      "volume": 102,
      "number": 17,
      "pages": 170602
    },
    "note": {
      "typesetting": "TeX",
      "pages": 1,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 798104,
      "adsabs": "2009PhRvL.102q0602F"
    }
  }
}