Pinwheel solutions to Schrödinger systems

We establish the existence of positive segregated solutions for competitive nonlinear Schrödinger systems in the presence of an external trapping potential, which have the property that each component is obtained from the previous one by a rotation, and we study their behavior as the forces of interaction become very small or very large. As a consequence, we obtain optimal partitions for the Schrödinger equation by sets that are linearly isometric to each other.