Nonlinearity in the disordered SSH chain causes asymptotic wave-packet spreading to become independent of topological parameters due to mode interactions, unlike the linear case with anomalous diffusion at the transition.
Pho- tonic topological Anderson insulators,
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Wave-packet spreading in the disordered and nonlinear Su-Schrieffer-Heeger chain
Nonlinearity in the disordered SSH chain causes asymptotic wave-packet spreading to become independent of topological parameters due to mode interactions, unlike the linear case with anomalous diffusion at the transition.