and the solitary wave number and parameters remain unchanged after the interaction. However, anomalies appear in the dependence of the soliton phase shifts on
their parameters that may be easily understood using an example of two-soliton
interaction (Fig. 3) [7].
Fig. 2 The family of stationary solutions of system (8) (left panel) and Gardner equation (right
panel)
Fig. 3 Concurrent interaction of two solitons, one of which is close to the limiting soliton
(CC-model)
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