{
  "id": "1710.05349",
  "version": "v1",
  "published": "2017-10-15T15:48:52.000Z",
  "updated": "2017-10-15T15:48:52.000Z",
  "title": "Large fluctuations and dynamic phase transition in a system of self-propelled particles",
  "authors": [
    "Francesco Cagnetta",
    "Federico Corberi",
    "Giuseppe Gonnella",
    "Antonio Suma"
  ],
  "comment": "6 pages, 4 figures",
  "journal": "Phys. Rev. Lett. 119, 158002 (2017)",
  "doi": "10.1103/PhysRevLett.119.158002",
  "categories": [
    "cond-mat.stat-mech"
  ],
  "abstract": "We study the statistics, in stationary conditions, of the work $W_\\tau$ done by the active force in different systems of self-propelled particles in a time $\\tau$. We show the existence of a critical value $W_\\tau ^\\dag$ such that fluctuations with $W_\\tau >W_\\tau ^\\dag$ correspond to configurations where interaction between particles plays a minor role whereas those with $W_\\tau < W_\\tau ^\\dag$ represent states with single particles dragged by clusters. This two-fold behavior is fully mirrored by the probability distribution $P(W_\\tau)$ of the work, which does not obey the large-deviation principle for $W_\\tau <W_\\tau ^\\dag$. This pattern of behavior can be interpreted as due to a phase transition occurring at the level of fluctuating quantities and an order parameter is correspondingly identified.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2017-10-15T15:48:52.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "dynamic phase transition",
      "self-propelled particles",
      "large fluctuations",
      "order parameter",
      "large-deviation principle"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "APS",
      "journal": "Phys. Rev. Lett."
    },
    "note": {
      "typesetting": "TeX",
      "pages": 6,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}