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arxiv: 0909.2112 · v1 · pith:SLD2QVLUnew · submitted 2009-09-11 · ❄️ cond-mat.stat-mech · cond-mat.dis-nn

Subdiffusion in the Nonlinear Schroedinger Equation with Disorder

classification ❄️ cond-mat.stat-mech cond-mat.dis-nn
keywords subdiffusiondisorderequationnonlinearpacketschroedingerwaveconsidered
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The nonlinear Schroedinger equation in the presence of disorder is considered. The dynamics of an initially localized wave packet is studied. A subdiffusive spreading of the wave packet is explained in the framework of a continuous time random walk. A probabilistic description of subdiffusion is suggested and a transport exponent of subdiffusion is obtained to be 2/5.

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