Kink scattering in a generalized Wess-Zumino model

Abstract

In this paper, kink scattering in the dimensional reduction of the bosonic sector of a one-parameter family of generalized Wess-Zumino models with three vacuum points is discussed. The value of the model parameter determines the specific location of the vacua. The influence of the vacuum arrangements (evolving from three collinear vacua to three vacua placed at the vertices of an equilateral triangle) on the kink scattering is investigated. Two different regimes can be distinguished: in the first one, two symmetric BPS kinks/antikinks arise whereas in the second one a new different BPS kink/antikink emerges, with the exception of a three-fold rotational symmetry case, where the three topological defects are identical. The scattering between the two symmetric kinks is thoroughly analyzed. Two different scattering channels have been found: kink-kink reflection and kink-kink hybridization. In the last case, the collision between the two symmetric kinks gives rise to the third different kink. Resonance phenomena also appear allowing a vibrating kink to split into two symmetric kinks moving away.

23 pages, 15 figures

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Cited by in corpus (4)

• Wobbling kinks in a two-component scalar field theory: Interaction between shape modes
• Resonance mediated by fermions in kink-antikink collisions
• Asymmetric scattering between kinks and wobblers
• Kink-antikink collision in the supersymmetric ${\varphi }^4$ model