Anomalous diffusion in the resonant quantum kicked rotor

Details Anomalous diffusion in the resonant quantum kicked rotor Anomalous diffusion in the resonant quantum kicked rotor

2009-08-31

arxiv.org/abs/0908.4596v2

Physics

Quantum Physics

5 pages, 3 figures To appear in Physica A.

Scientific paper

We study the resonances of the quantum kicked rotor subjected to an excitation that follows a deterministic time-dependent prescription. For the primary resonances we find an analytical relation between the long-time behavior of the standard deviation and the external kick strength. For the secondary resonances we obtain essentially the same result numerically. Selecting the time sequence of the kick allows to obtain a variety of asymptotic wave-function spreadings: super-ballistic, ballistic, sub-ballistic, diffusive, sub-diffusive and localized.

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