Artículo
Nucleation of breathers via stochastic resonance in nonlinear lattices
Autor/es | Cubero Gómez, David
Cuevas-Maraver, Jesús Kevrekidis, Panayotis G. |
Departamento | Universidad de Sevilla. Departamento de Física Aplicada I |
Fecha de publicación | 2009 |
Fecha de depósito | 2015-02-08 |
Publicado en |
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Resumen | By applying a staggered driving force in a prototypical discrete model with a quartic nonlinearity, we demonstrate the spontaneous formation and destruction of discrete breathers with a selected frequency due to thermal ... By applying a staggered driving force in a prototypical discrete model with a quartic nonlinearity, we demonstrate the spontaneous formation and destruction of discrete breathers with a selected frequency due to thermal fluctuations. The phenomenon exhibits the striking features of stochastic resonance (SR): a nonmonotonic behavior as noise is increased and breather generation under subthreshold conditions. The corresponding peak is associated with a matching between the external driving frequency and the breather frequency at the average energy given by ambient temperatur. |
Ficheros | Tamaño | Formato | Ver | Descripción |
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PRL_Cuevas_2009_May.pdf | 891.4Kb | [PDF] | Ver/ | |