Figure 3
(a,b) Display the long-time evolution of the wave packet in a nonlinear system in the n − t and in the x − t planes, respectively. The system parameters are the same as in Fig. 1 except for the optimal nonlinearty of g = 0.9 considered here. (c,d) Show the destruction of robustness of the BOs in the presence of much stronger nonlinearity g = 1.6 than the optimal one. The parameters are chosen as α = 0.5, κ = 2 and γ = 0.1. The initial condition is given by Eq. (3) with a 0 = 0.15 and w = 100. All the other parameters are identical to those in Fig. 1 for both cases.
