Superballistic spreading of wave packets
classification
❄️ cond-mat.dis-nn
keywords
superballisticsystemsvariouswaveconstructeddemonstratedisorderedexplains
read the original abstract
We demonstrate for various systems that the variance of a wave packet $M(t)\propto t^\nu$, can show a {\it superballistic} increase with $2<\nu\le3$, for parametrically large time intervals. A model is constructed which explains this phenomenon and its predictions are verified numerically for various disordered and quasi-periodic systems.
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