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Nonlinear energy transmission in the gap

Authors
Journal
Physics Letters A
0375-9601
Publisher
Elsevier
Publication Date
Volume
283
Identifiers
DOI: 10.1016/s0375-9601(01)00192-x

Abstract

Abstract Numerical simulations of the scattering of a linear plane wave incoming onto a nonlinear medium (sine–Gordon) reveals that: (i) nonlinearity allows energy transmission in the forbidden band, (ii) this nonlinear transmission occurs beyond an energy threshold of the incoming wave, (iii) the process begins (at the threshold) with large amplitude breathers, and then energy is generically transmitted both by kink–antikink pairs and breathers.

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