Long-lasting exponential spreading in periodically driven quantum systems |
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| Authors: | Wang Jiao Guarneri Italo Casati Giulio Gong Jiangbin |
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| Institution: | Department of Physics and Institute of Theoretical Physics and Astrophysics, Xiamen University, Xiamen 361005, China. |
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| Abstract: | Using a dynamical model relevant to cold-atom experiments, we show that long-lasting exponential spreading of wave packets in momentum space is possible. Numerical results are explained via a pseudoclassical map, both qualitatively and quantitatively. Possible applications of our findings are also briefly discussed. |
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