Time asymmetry of the Kramers equation with nonlinear friction: Fluctuation-dissipation relation and ratchet effect (Articolo in rivista)

Type
Label
  • Time asymmetry of the Kramers equation with nonlinear friction: Fluctuation-dissipation relation and ratchet effect (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevE.88.052124 (literal)
Alternative label
  • A. Sarracino (2013)
    Time asymmetry of the Kramers equation with nonlinear friction: Fluctuation-dissipation relation and ratchet effect
    in Physical review. E, Statistical, nonlinear, and soft matter physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Sarracino (literal)
Pagina inizio
  • 052124 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://pre.aps.org/abstract/PRE/v88/i5/e052124 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 88 (literal)
Rivista
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  • 6 (literal)
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  • 5 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR-ISC and Dipartimento di Fisica, Università Sapienza, p.le A. Moro 2, 00185 Roma, Italy (literal)
Titolo
  • Time asymmetry of the Kramers equation with nonlinear friction: Fluctuation-dissipation relation and ratchet effect (literal)
Abstract
  • We show by numerical simulations that the presence of nonlinear velocity-dependent friction forces can induce a finite net drift in the stochastic motion of a particle in contact with an equilibrium thermal bath and in an asymmetric periodic spatial potential. In particular, we study the Kramers equation for a particle subjected to Coulomb friction, namely a constant force acting in the direction opposite to the particle's velocity. We characterize the nonequilibrium irreversible dynamics by studying the generalized fluctuation-dissipation relation for this ratchet model driven by Coulomb friction. (literal)
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