In 2D disordered nonlinear lattices, the second moment of spreading wave packets grows as t^(1/5) in the weak and t^(1/3) in the strong chaos regime, while the maximum Lyapunov exponent decays as t^(-0.37) and t^(-0.46).
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Chaotic wave packet spreading in two-dimensional disordered nonlinear lattices
In 2D disordered nonlinear lattices, the second moment of spreading wave packets grows as t^(1/5) in the weak and t^(1/3) in the strong chaos regime, while the maximum Lyapunov exponent decays as t^(-0.37) and t^(-0.46).