Phenomenology of the 1D NRCH model

I will present the phenomenology of the one dimensional Nonreciprocal Cahn-Hilliard model for varying nonreciprocity and different boundary conditions. For small nonreciprocity, a perturbed uniform state evolves to a defect laden configuration that lacks global polar order. A critical threshold of nonreciprocity marks the onset of a transition to states with finite global polar order. For periodic boundaries, above the threshold the system shows traveling waves that are completely ordered. In contrast, traveling waves are incompatible with Dirichlet and Neumann boundaries. Instead, we find fluctuating domains that show intermittent polar order and at large values of nonreciprocity, the system partitions into two domains with opposite polar order.