Figure 2
From: Extended stable equilibrium invaded by an unstable state
Front propagation of model Eq. (1), V(u) = u6/6 − 0.7u5/5 − u4/4 + 0.7u3/3, with additive Gaussian white noise and noise level intensity 0.1. D = 0.85, B = 1, C = −1, and A = 0 are the stable and saddle equilibrium. The upper panel shows the spatiotemporal diagram from the initial condition homogeneous solution u = 1. The lower panels account for the profile of the field u(x, t) at the instant represented by the (i), (ii), (iii), and (iv).
