{
  "id": "cond-mat/0412446",
  "version": "v2",
  "published": "2004-12-16T15:40:57.000Z",
  "updated": "2005-01-21T10:57:05.000Z",
  "title": "Particle Content of the Nonlinear Sigma Model with Theta-Term: a Lattice Model Investigation",
  "authors": [
    "L. Campos Venuti",
    "C. Degli Esposti Boschi",
    "E. Ercolessi",
    "F. Ortolani",
    "G. Morandi",
    "S. Pasini",
    "M. Roncaglia"
  ],
  "comment": "10 pages, 5 figures .eps, iopart format, submitted to JSTAT",
  "journal": "J.Stat.Mech.0504:L04004,2005",
  "doi": "10.1088/1742-5468/2005/02/L02004",
  "categories": [
    "cond-mat.stat-mech",
    "cond-mat.str-el",
    "hep-th"
  ],
  "abstract": "Using new as well as known results on dimerized quantum spin chains with frustration, we are able to infer some properties on the low-energy spectrum of the O(3) Nonlinear Sigma Model with a topological theta-term. In particular, for sufficiently strong coupling, we find a range of values of theta where a singlet bound state is stable under the triplet continuum. On the basis of these results, we propose a new renormalization group flow diagram for the Nonlinear Sigma Model with theta-term.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2005-01-21T10:57:05.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "03.65.Vf",
      "75.10.Pq",
      "11.10.Lm",
      "11.10.St"
    ],
    "keywords": [
      "nonlinear sigma model",
      "lattice model investigation",
      "particle content",
      "theta-term",
      "renormalization group flow diagram"
    ],
    "tags": [
      "journal article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 10,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 667376
    }
  }
}