Non-BPS domain wall configurations in a supersymmetric model

We study the time evolution of configurations in the form of two parallel domain walls moving towards each other in a supersymmetric field model. The configurations involved are not BPS-saturated. It is found that for such collisions there exists some critical value $v_{cr}\approx0.9120$ of the initial velocity v_i of the walls. At v_i<v_{cr} we observed reflection, that was not followed by change of vacuum states sequence. In collisions with v_i>v_{cr} the sequence of vacuum states changes. The results of the numerical simulations are in agreement with "potential" consideration.

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