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Interaction of moving breathers with an impurity

J. Cuevas·F. Palmero·J. F. R. Archilla·F. R. Romero
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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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J. Cuevas, F. Palmero, J. F. R. Archilla, F. R. Romero. 2003-06-17. Interaction of moving breathers with an impurity. https://doi.org/10.1142/9789812704627_0021

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