Figure 4

The rescaled local excess energy distribution function ρ E (j, t) for FPU-β-like DNLS model with N = 2000. The dotted curve is the normalized Gaussian distribution function with diffusion constant D = 44.0.
The rescaled local excess energy distribution function ρ E (j, t) for FPU-β-like DNLS model with N = 2000. The dotted curve is the normalized Gaussian distribution function with diffusion constant D = 44.0.