{
  "id": "cond-mat/9903136",
  "version": "v1",
  "published": "1999-03-08T15:05:01.000Z",
  "updated": "1999-03-08T15:05:01.000Z",
  "title": "Violation of the Fluctuation-Dissipation Theorem in a Two-Dimensional Ising Model with Dipolar Interactions",
  "authors": [
    "Daniel A. Stariolo",
    "Sergio A. Cannas"
  ],
  "comment": "5 pages (Revtex) and 3 figures (.ps)",
  "journal": "Phys. Rev. B 60, 3013 (1999).",
  "doi": "10.1103/PhysRevB.60.3013",
  "categories": [
    "cond-mat.dis-nn"
  ],
  "abstract": "The violation of the Fluctuation-Dissipation Theorem (FDT) in a two-dimensional Ising model with both ferromagnetic exchange and antiferromagnetic dipolar interactions is established and investigated via Monte Carlo simulations. Through the computation of the autocorrelation C(t+t_w,t_w) and the integrated response (susceptibility) functions we obtain the FDT violation factor X(t+t_w,t_w) for different values of the temperature, the waiting time t_w and the quotient delta=J_0/J_d, J_0 and J_d being the strength of exchange and dipolar interactions respectively. For positive values of delta this system develops a striped phase at low temperatures, in which the non-equilibrium dynamics presents two different regimes. Our results show that such different regimes are not reflected in the FDT violation factor, where X goes always to zero for high values of t_w in the aging regime, a result that appears in domain growth processes in non-frustrated ordered systems.",
  "revisions": [
    {
      "version": "v1",
      "updated": "1999-03-08T15:05:01.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "two-dimensional ising model",
      "fluctuation-dissipation theorem",
      "fdt violation factor",
      "antiferromagnetic dipolar interactions",
      "monte carlo simulations"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. B"
    },
    "note": {
      "typesetting": "RevTeX",
      "pages": 5,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}