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Moving discrete breathers in a Klein--Gordon chain with an impurity | J. Cuevas
; F. Palmero
; J.F.R. Archilla
; F.R. Romero
; | Date: |
14 Mar 2002 | Journal: | J. Phys A: Math. Gen. 35 (2002) 10519 | Subject: | Pattern Formation and Solitons | nlin.PS | Abstract: | We analyze the influence of an impurity in the movement of discrete breathers in Klein--Gordon chains. We observe that the moving breather can cross the impurity, can be reflected by it, or can be trapped originating a quasi-periodic breather. We find that resonance with a nonlinear localised mode centred in the impurity is a necessary condition in order to observe the trapping phenomenon, as a difference with the resonance condition with a linear localised mode when this problem is studied within the Nonlinear Schrödinger Equation approximation. | Source: | arXiv, nlin.PS/0203026 | Services: | Forum | Review | PDF | Favorites |
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