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Interaction of moving breathers with an impurity


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Opened Access Interaction of moving breathers with an impurity
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Author: Cuevas-Maraver, Jesús
Palmero Acebedo, Faustino
Archilla, Juan F. R.
Romero Romero, Francisco
Department: Universidad de Sevilla. Departamento de Física Aplicada I
Universidad de Sevilla. Departamento de Física Atómica, Molecular y Nuclear
Date: 2003
Published in: L. Vázquez, R. S. MacKay & M. P. Zorzano (Eds.), Localization and Energy Transfer in Nonlinear Systems. Proceedings of the Third Conference San Lorenzo de El Escorial Madrid, Spain, 17 – 21 June 2002 (pp. 256-259). Singapore: World Scientific
ISBN/ISSN: 978-981-238-296-2
Document type: Presentation
Abstract: We analyze the influence of an impurity in the evolution of moving discrete breathers in a Klein–Gordon chain with non-weak nonlinearity. Three different behaviours can be observed when moving breathers interact with the impurity: they pass through the impurity continuing their direction of movement; they are reflected by the impurity; they are trapped by the impurity, giving rise to chaotic breathers. Resonance with a breather centred at the impurity site is conjectured to be a necessary condition for the appearance of the trapping phenomenon.
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