{
  "id": "cond-mat/9702084",
  "version": "v1",
  "published": "1997-02-10T17:44:20.000Z",
  "updated": "1997-02-10T17:44:20.000Z",
  "title": "Comment on \"No enhancement of the localization length for two interacting particles in a random potential\"",
  "authors": [
    "Klaus Frahm",
    "Axel Mueller-Groeling",
    "Jean-Louis Pichard",
    "Dietmar Weinmann"
  ],
  "comment": "1 page, Revtex, one figure",
  "doi": "10.1103/PhysRevLett.78.4889",
  "categories": [
    "cond-mat.dis-nn",
    "cond-mat.mes-hall"
  ],
  "abstract": "In a recent letter [Phys. Rev. Lett. 78, 515 (1997); cond-mat/9612034] Roemer and Schreiber report on numerical calculations that led them to conclude that the previously observed enhancement of the localization length $L_2$ of two interacting particles (TIP) vanishes in the thermodynamic limit. We point out that such a claim (i) is in conflict with the scaling theory of localization, (ii) ignores a consistent picture from a wealth of published numerical data and analytical investigations, and (iii) directly contradicts new numerical results obtained with a Green function method that is well adapted to the problem under study. The claim of Roemer and Schreiber is based on extrapolating from L<360 to infinity. Our data clearly shows the two particle localization length $L_2$ to be significantly enhanced and independent of system size between L=100 and L=1000, as expected on physical grounds.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1997-02-10T17:44:20.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "interacting particles",
      "random potential",
      "enhancement",
      "green function method",
      "particle localization length"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 1,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}