Soliton ratchets out of point-like inhomogeneities

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dc.contributor.author Morales-Molina, Luis
dc.contributor.author Mertens, Franz G.
dc.contributor.author Sancho, Angel
dc.date.accessioned 2012-08-29T09:17:41Z
dc.date.available 2012-08-29T09:17:41Z
dc.date.issued 2004-01
dc.identifier.bibliographicCitation The European Physical Journal B, vol. 37, n. 1, jan. 2004. Pp. 79-83
dc.identifier.issn 1434-6028 (print version)
dc.identifier.issn 1434-6036 (online version)
dc.identifier.uri http://hdl.handle.net/10016/15146
dc.description Proceedings of: FPU+50: Nonlinear waves fifty years after Fermi-Pasta-Ulam. Rouen, Francia, 21 - 25 de junio de 2005
dc.description.abstract We introduce and study a novel design for a ratchet potential for soliton excitations. The potential is implemented by means of an array of point-like (delta) inhomogeneities in an otherwise homogeneous potential. We use collective coordinates which predict that the effective potential acting on the soliton is periodic but asymmetric and gives rise to the ratchet effect. Numerical simulations fully confirm this prediction; quantitative agreement is reached by an improved version of the theory. Although we specifically show that it is most interesting for building Josephson junction ratchets capable to rectify time-symmetric ac forces, the proposed mechanism is very general and can appear in many contexts, including biological systems.
dc.description.sponsorship This work has been supported by the Ministerio de Ciencia y Tecnolog´ıa of Spain through grant BFM2000-0006 (AS), and by the International Research Training Group ‘Nonequilibrium Phenomena and Phase Transitions in Complex Systems’ (DFG, Germany).
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Springer
dc.publisher EDP Sciences
dc.publisher Società Italiana di Fisica
dc.rights © Springer
dc.rights © EDP Sciences
dc.rights © Società Italiana di Fisica
dc.subject.other Solitons
dc.subject.other Transport processes
dc.subject.other Localized modes
dc.title Soliton ratchets out of point-like inhomogeneities
dc.type article
dc.description.status Publicado
dc.relation.publisherversion http://dx.doi.org/10.1140/epjb/e2004-00031-3
dc.subject.eciencia Matemáticas
dc.identifier.doi 10.1140/epjb/e2004-00031-3
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.relation.eventdate 21-25 junio de 2005
dc.relation.eventplace Rouen, Francia
dc.relation.eventtitle FPU+50: Nonlinear waves fifty years after Fermi-Pasta-Ulam
dc.identifier.publicationfirstpage 79
dc.identifier.publicationissue n. 1
dc.identifier.publicationlastpage 83
dc.identifier.publicationtitle The European Physical Journal B
dc.identifier.publicationvolume vol. 37
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