Domain wall junctions in a generalized Wess-Zumino model

We investigate domain wall junctions in a generalized Wess-Zumino model with a ZN symmetry. We present a method to identify the junctions that are potentially BPS saturated. We then use a numerical simulation to show that those junctions indeed saturate the BPS bound for N=4. In addition, we study the decay of unstable non-BPS junctions.