Figure 1

(a)–(b) spatial density |ψ|² distribution at (a) t = 0 and at (b) t = 100T; (c) momentum diffusion 〈P〉 versus time in linear (dashed lines) and nonlinear (solid lines) conditions and for increasing coupling . In the simulations we set σ = 0.2, ω₀ = 0.3, A = 4 and K = 1.8.