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Non-propagating solitons of the non-isospectral and variable coefficient modified KdV equation. (English) Zbl 0811.35120

Summary: The AKNS system associated with a non-isospectral and variable coefficient mKdV equation is presented. The method of inverse scattering is adapted to the non-isospectral situation to determine the time evolution of the scattering data. \(N\)-soliton solutions are obtained. Examples of oscillating or standing one-solitons with unusual dynamics are given. An in-depth study of the two-soliton case is carried out by appropriately decomposing the solution into individual soliton elements in order to examine their interactions. Breathers are also constructed.

MSC:

35Q53 KdV equations (Korteweg-de Vries equations)
37J35 Completely integrable finite-dimensional Hamiltonian systems, integration methods, integrability tests
37K10 Completely integrable infinite-dimensional Hamiltonian and Lagrangian systems, integration methods, integrability tests, integrable hierarchies (KdV, KP, Toda, etc.)
35Q51 Soliton equations
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