Sine-Gordon ratchets with general periodic, additive, and parametric driving forces

Elías Zamora-Sillero1, Niurka R Quintero, Franz G Mertens

  • 1Departamento de Física Aplicada I, E. U. P., Universidad de Sevilla, Virgen de Africa 7, 41011 Sevilla, Spain. ezamora80@us.es

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