{
  "id": "1111.5798",
  "version": "v2",
  "published": "2011-11-24T15:28:23.000Z",
  "updated": "2012-03-09T15:45:37.000Z",
  "title": "Non-equilibrium fluctuations in a driven stochastic Lorentz gas",
  "authors": [
    "G. Gradenigo",
    "U. Marini Bettolo Marconi",
    "A. Puglisi",
    "A. Sarracino"
  ],
  "comment": "6 pages, 4 figures",
  "journal": "Phys. Rev. E 85, 031112 (2012)",
  "doi": "10.1103/PhysRevE.85.031112",
  "categories": [
    "cond-mat.stat-mech"
  ],
  "abstract": "We study the stationary state of a one-dimensional kinetic model where a probe particle is driven by an external field E and collides, elastically or inelastically, with a bath of particles at temperature T. We focus on the stationary distribution of the velocity of the particle, and of two estimates of the total entropy production \\Delta s_tot. One is the entropy production of the medium \\Delta s_m, which is equal to the energy exchanged with the scatterers, divided by a parameter \\theta, coinciding with the particle temperature at E=0. The other is the work W done by the external field, again rescaled by \\theta. At small E, a good collapse of the two distributions is found: in this case the two quantities also verify the Fluctuation Relation (FR), indicating that both are good approximations of \\Delta s_tot. Differently, for large values of E, the fluctuations of W violate the FR, while \\Delta s_m still verifies it.",
  "revisions": [
    {
      "version": "v2",
      "updated": "2012-03-09T15:45:37.000Z"
    }
  ],
  "analyses": {
    "subjects": [
      "05.40.-a",
      "02.50.Ey",
      "05.70.Ln"
    ],
    "keywords": [
      "driven stochastic lorentz gas",
      "non-equilibrium fluctuations",
      "external field",
      "one-dimensional kinetic model",
      "total entropy production"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Physical Review E",
      "year": 2012,
      "month": "Mar",
      "volume": 85,
      "number": 3,
      "pages": "031112"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "adsabs": "2012PhRvE..85c1112G"
    }
  }
}