The out of equilibrium response function in sub-diffusive systems (Articolo in rivista)

Type
Label
  • The out of equilibrium response function in sub-diffusive systems (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0031-8949/86/05/058516 (literal)
Alternative label
  • G. Gradenigo (1); A. Puglisi (1); A. Sarracino (1); A. Vulpiani (1); D. Villamaina (2) (2012)
    The out of equilibrium response function in sub-diffusive systems
    in Physica scripta (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G. Gradenigo (1); A. Puglisi (1); A. Sarracino (1); A. Vulpiani (1); D. Villamaina (2) (literal)
Pagina inizio
  • 058516 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/1402-4896/86/5/058516 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1) CNR-ISC and Dipartimento di Fisica, Università Sapienza--p.le A. Moro 2, 00185 Roma, Italy 2) University of Paris-Sud and CNRS, LPTMS, UMR 8626, Orsay 91405, France (literal)
Titolo
  • The out of equilibrium response function in sub-diffusive systems (literal)
Abstract
  • We study the Einstein relation between spontaneous fluctuations and the response to an external perturbation for the comb model and the single file, which are examples of systems with sub-diffusive transport properties. The relevance of nonequilibrium conditions is investigated: when a stationary current (in the form of a drift or an energy flux) is present, the Einstein relation breaks down. In the case of the comb model, a general relation-appearing in the recent literature-between the response function and an unperturbed suitable correlation function allows us to explain the obtained results. This suggests that the relevant ingredient in breaking the Einstein formula, for stationary regimes, is not anomalous diffusion but the presence of currents driving the system out of equilibrium. (literal)
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