Stochastic resonance and brownian ratchets

Fendrik, Alejandro J.; Romanelli, Lilia; Perazzo, Roberto P. J.

artículo de publicación periódica.page.titleprefix
Stochastic resonance and brownian ratchets

dc.contributor.author	Fendrik, Alejandro J.
dc.contributor.author	Romanelli, Lilia
dc.contributor.author	Perazzo, Roberto P. J.
dc.date.accessioned	2018-11-26T17:38:25Z
dc.date.available	2018-11-26T17:38:25Z
dc.date.issued	2005
dc.description.abstract	"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."	en
dc.identifier.issn	0378-4371
dc.identifier.uri	http://ri.itba.edu.ar/handle/123456789/1333
dc.language.iso	en	en
dc.relation	info:eu-repo/semantics/altIdentifier/doi/10.1016/j.physa.2005.04.035
dc.relation	info:eu-repo/grantAgreement/CONICET/PIP/02490/AR. Ciudad Autónoma de Buenos Aires
dc.relation	info:eu-repo/grantAgreement/UBA/UBACyT/X281/AR. Ciudad Autónoma de Buenos Aires
dc.subject	TERMODINAMICA	es
dc.subject	MECANICA	es
dc.subject	MOTORES	es
dc.subject	FENOMENOS DE TRANSPORTE	es
dc.title	Stochastic resonance and brownian ratchets	en
dc.type	Artículos de Publicaciones Periódicas	es
dc.type	info:eu-repo/semantics/acceptedversion
dspace.entity.type	Artículo de Publicación Periódica
itba.description.filiation	Fil: Fendrik, Alejandro J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina.
itba.description.filiation	Fil: Romanelli, Lilia. Universidad de General Sarmiento; Argentina.
itba.description.filiation	Fil: Perazzo, Roberto P. J. Instituto Tecnológico de Buenos Aires; Argentina.