We argue that the Wess-Zumino model with quartic superpotential admits stable static solutions in which three domain walls intersect at a junction. We derive an energy bound for such junctions and show that configurations saturating it preserve $\frac{1}{4}$ supersymmetry.

• Received 11 June 1999

DOI:https://doi.org/10.1103/PhysRevLett.83.1727