Abstract
We introduce a new class of piece-wise quadratic potentials for nonlinear wave equations with a kink solutions. The potentials allow an exact description of the spectral properties for the linearized equation at the kink. This description is necessary for the study of the stability properties of the kinks. In particular, we construct examples of the potentials of Ginzburg–Landau type providing the asymptotic stability of the kinks [6] and [7]. Mathematics Subject Classification (2010). 35L70, 37K40.
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