Novel interface-selected waves and their influences on wave competitions

Details Novel interface-selected waves and their influences on wave competitions Novel interface-selected waves and their influences on wave competitions

2008-06-20

arxiv.org/abs/0806.3312v1

Nonlinear Sciences

Chaotic Dynamics

Scientific paper

10.1103/PhysRevE.78.026202

The topic of interface effects in wave propagation has attracted great attention due to their theoretical significance and practical importance. In this paper we study nonlinear oscillatory systems consisting of two media separated by an interface, and find a novel phenomenon: interface can select a type of waves (ISWs). Under certain well defined parameter condition, these waves propagate in two different media with same frequency and same wave number; the interface of two media is transparent to these waves. The frequency and wave number of these interface-selected waves (ISWs) are predicted explicitly. Varying parameters from this parameter set, the wave numbers of two domains become different, and the difference increases from zero continuously as the distance between the given parameters and this parameter set increases from zero. It is found that ISWs can play crucial roles in practical problems of wave competitions, e.g., ISWs can suppress spirals and antispirals.

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