摘要
Chimera states consisting of spatially coherent and incoherent domains have been observed in differ- ent topologies such as rings, spheres, and complex networks. In this paper, we investigate bipartite networks of nonlocally coupled FitzHugh-Nagumo （FHN） oscillators in which the units are allocated evenly to two layers, and FHN units interact with each other only when they are in different lay- ers. We report the existence of chimera states in bipartite networks. Owing to the interplay between chimera states in the two layers, many types of chimera states such as in-phase chimera states, an- tiphase chimera states, and out-of-phase chimera states are classified. Stability diagrams of several typical chimera states in the coupling strength-coupling radius plane, which show strong multistability of chimera states, are explored.
Chimera states consisting of spatially coherent and incoherent domains have been observed in differ- ent topologies such as rings, spheres, and complex networks. In this paper, we investigate bipartite networks of nonlocally coupled FitzHugh-Nagumo （FHN） oscillators in which the units are allocated evenly to two layers, and FHN units interact with each other only when they are in different lay- ers. We report the existence of chimera states in bipartite networks. Owing to the interplay between chimera states in the two layers, many types of chimera states such as in-phase chimera states, an- tiphase chimera states, and out-of-phase chimera states are classified. Stability diagrams of several typical chimera states in the coupling strength-coupling radius plane, which show strong multistability of chimera states, are explored.
基金
This work was supported by the National Natural Science Foundation of China under Grant Nos. 11575036 and 11505016.
