Stochastic resonance and brownian ratchets

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"We discuss the connections between Brownian ratchets (BR) and stochastic resonance (SR). We consider a periodic potential energy landscape with no left–right symmetry that is driven by an external force which can be derived from a potential that is periodic both in time and space. We show tha...

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Autores principales: Fendrik, Alejandro J., Romanelli, Lilia, Perazzo, Roberto P. J.
Formato: Artículos de Publicaciones Periódicas info:eu-repo/semantics/acceptedversion
Lenguaje:Inglés
Publicado: 2018
Materias:
TERMODINAMICA
MECANICA
MOTORES
FENOMENOS DE TRANSPORTE
Acceso en línea:http://ri.itba.edu.ar/handle/123456789/1333
Aporte de:
Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA) de Instituto Tecnológico de Buenos Aires (ITBA)
id I32-R138-123456789-1333
record_format dspace
spelling I32-R138-123456789-13332022-12-07T13:07:04Z Stochastic resonance and brownian ratchets Fendrik, Alejandro J. Romanelli, Lilia Perazzo, Roberto P. J. TERMODINAMICA MECANICA MOTORES FENOMENOS DE TRANSPORTE "We discuss the connections between Brownian ratchets (BR) and stochastic resonance (SR). We consider a periodic potential energy landscape with no left–right symmetry that is driven by an external force which can be derived from a potential that is periodic both in time and space. We show that this system presents two thermal enhancements within two different windows of the temperature. One is associated with a ‘‘coherent diffusion’’ by which particles jump back and forth between the minima of the periodic potential in synchrony with the external driving. The other is instead associated with a ‘‘coherent directional transport’’ by which particles hop synchronically from one minimum of the ratchet to the next. We calculate the current and the diffusion coefficients and show how transport undergoes a resonant enhancement. While the former is always present, the second only appears when left–right symmetry is broken." 2018-11-26T17:38:25Z 2018-11-26T17:38:25Z 2005 Artículos de Publicaciones Periódicas info:eu-repo/semantics/acceptedversion 0378-4371 http://ri.itba.edu.ar/handle/123456789/1333 en info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physa.2005.04.035 info:eu-repo/grantAgreement/CONICET/PIP/02490/AR. Ciudad Autónoma de Buenos Aires info:eu-repo/grantAgreement/UBA/UBACyT/X281/AR. Ciudad Autónoma de Buenos Aires application/pdf
institution Instituto Tecnológico de Buenos Aires (ITBA)
institution_str I-32
repository_str R-138
collection Repositorio Institucional Instituto Tecnológico de Buenos Aires (ITBA)
language Inglés
topic TERMODINAMICA
MECANICA
MOTORES
FENOMENOS DE TRANSPORTE
spellingShingle TERMODINAMICA
MECANICA
MOTORES
FENOMENOS DE TRANSPORTE
Fendrik, Alejandro J.
Romanelli, Lilia
Perazzo, Roberto P. J.
Stochastic resonance and brownian ratchets
topic_facet TERMODINAMICA
MECANICA
MOTORES
FENOMENOS DE TRANSPORTE
description "We discuss the connections between Brownian ratchets (BR) and stochastic resonance (SR). We consider a periodic potential energy landscape with no left–right symmetry that is driven by an external force which can be derived from a potential that is periodic both in time and space. We show that this system presents two thermal enhancements within two different windows of the temperature. One is associated with a ‘‘coherent diffusion’’ by which particles jump back and forth between the minima of the periodic potential in synchrony with the external driving. The other is instead associated with a ‘‘coherent directional transport’’ by which particles hop synchronically from one minimum of the ratchet to the next. We calculate the current and the diffusion coefficients and show how transport undergoes a resonant enhancement. While the former is always present, the second only appears when left–right symmetry is broken."
format Artículos de Publicaciones Periódicas
info:eu-repo/semantics/acceptedversion
author Fendrik, Alejandro J.
Romanelli, Lilia
Perazzo, Roberto P. J.
author_facet Fendrik, Alejandro J.
Romanelli, Lilia
Perazzo, Roberto P. J.
author_sort Fendrik, Alejandro J.
title Stochastic resonance and brownian ratchets
title_short Stochastic resonance and brownian ratchets
title_full Stochastic resonance and brownian ratchets
title_fullStr Stochastic resonance and brownian ratchets
title_full_unstemmed Stochastic resonance and brownian ratchets
title_sort stochastic resonance and brownian ratchets
publishDate 2018
url http://ri.itba.edu.ar/handle/123456789/1333
work_keys_str_mv AT fendrikalejandroj stochasticresonanceandbrownianratchets
AT romanellililia stochasticresonanceandbrownianratchets
AT perazzorobertopj stochasticresonanceandbrownianratchets
_version_ 1765660710352715776

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