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Regular and chaotic transport of discrete solitons in asymmetric potentials

Opened Access Regular and chaotic transport of discrete solitons in asymmetric potentials

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Autor: Cuevas-Maraver, Jesús
Sánchez-Rey, Bernardo
Salerno, Mario
Departamento: Universidad de Sevilla. Departamento de Física Aplicada I
Fecha: 2010
Publicado en: Physical Review E (2010, v. 82, n. 1, p. 016604:1-11)
Tipo de documento: Artículo
Resumen: Ratchet dynamics of topological solitons of the forced and damped discrete double sine-Gordon system are studied. Directed transport occurring both in regular and in chaotic regions of the phase space and its dependence on damping, amplitude, and frequency of the driving, asymmetry parameter, and coupling constant, has been extensively investigated. We show that the passage from ratchet phase-locked regime to chaotic ratchets occurs via a period doubling route to chaos and that, quite surprisingly, pinned states can exist inside phase locking and chaotic transport regions for intermediate values of the coupling constant. The possibility to control chaotic discrete soliton ratchets by means of both small subharmonic signals and more general periodic drivings, has also been investigated.
Tamaño: 19.05Mb
Formato: PDF

URI: http://hdl.handle.net/11441/23407

DOI: 10.1103/PhysRevE.82.016604

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