一维周期踢击无公度晶格中的动力学Anderson跃迁
Dynamical Anderson transition in one-dimensional periodically kicked incommensurate lattices
摘要：
研究了一维周期性受激无公度晶格中的动力学局域化跃迁，该晶格是用脉冲弱无公度晶格周期性扰动主光晶格而产生的。波包在脉冲光晶格中的扩散表现出扩展或局域化的行为，均方位移和空间关联函数可以很好地表征这种行为。结果表明，动力学局域化跃迁与无公度势的强度和被踢周期有关，并且可以通过Floquet传播子本征函数的信息熵来揭示动力学局域化跃迁点.
英文摘要：
We study the dynamical localization transition in a one-dimensional periodically kicked incommensurate lattice, which is created by perturbing a primary optical lattice periodically with a pulsed weaker incommensurate lattice. The diffusion of wave packets in the pulsed optical lattice exhibits either extended or localized behaviors, which can be well characterized by the mean square displacement and the spatial correlation function. We show that the dynamical localization transition is relevant to both the strength of incommensurate potential and the kicked period, and the transition point can be revealed by the information entropy of eigenfunctions of the Floquet propagator.
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