{
  "id": "cond-mat/9801108",
  "version": "v5",
  "published": "1998-01-12T21:06:07.000Z",
  "updated": "1998-10-08T20:04:26.000Z",
  "title": "Ground State Structure of Random Magnets",
  "authors": [
    "Sorin Bastea",
    "Philip M. Duxbury"
  ],
  "comment": "REVTEX, 5 included figures (1 color)",
  "journal": "Phys. Rev. E 58, 4261 (1998)",
  "doi": "10.1103/PhysRevE.58.4261",
  "categories": [
    "cond-mat.dis-nn",
    "cond-mat.stat-mech"
  ],
  "abstract": "Using exact optimization methods, we find all of the ground states of +/- h random-field Ising magnets (RFIM) and of dilute antiferromagnets in a field (DAFF). The degenerate ground states are usually composed of isolated clusters (two-level systems) embedded in a frozen background. We calculate the paramagnetic response (sublattice response) and the ground state entropy for the RFIM (DAFF) due to these clusters. In both two and three dimensions there is a broad regime in which these quantities are strictly positive, even at irrational values of h/J (J is the exchange constant).",
  "revisions": [
    {
      "version": "v5",
      "updated": "1998-10-08T20:04:26.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "ground state structure",
      "random magnets",
      "exact optimization methods",
      "degenerate ground states",
      "ground state entropy"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. E"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}