Figure 5
Enhancement factor and predicted regions of multicluster chimera states for exponential coupling kernel.
(a) Enhancement factor I as a function of η for different values of m. The regions of maximum I values among the different m curves (specified as bold lines) are the regions in which the corresponding m-cluster chimera states emerge. (b) Regions of m-cluster chimera states predicted by the mutual-enhancement theory (the colored thick horizontal lines at different m levels), including the main regions m = 3 and 2 and the subregion 2&4 for the 2&4-cluster chimera states. The gray and white backgrounds denote the regions of the m-cluster chimera states obtained from Eq. (1) and Eq. (5), respectively. The subregion for the 2&4-cluster chimera states obtained from Eqs (1) and (5) is within η = 0.76 and 0.91 as marked by the two thin black vertical lines. The exponential coupling kernel has κ = 4 and the phase lag is α = 1.457.
