去相干局域波
Decohering localized waves
摘要：
在没有限制的情况下，由于随机性或非线性，波的局部化发生，并依赖于它们的相位相干性。定量地探讨了局域化波包对随机相位起伏的敏感性，证实了相位相干性对局域化的必要性。动力学随机环境引起的退相干导致扩散扩散，破坏线性和非线性局域化。我们发现，最大的扩展实现了最佳的相位波动特性，这是由于退相干和弹道输运的平均自由程距离内的扩散之间的竞争的结果。
英文摘要：
In the absence of confinement localization of waves takes place due to randomness or nonlinearity and relies on their phase coherence. We quantitatively probe the sensitivity of localized wave packets to random phase fluctuations and confirm the necessity of phase coherence for localization. Decoherence resulting from a dynamical random environment leads to diffusive spreading and destroys linear and nonlinear localization. We find that maximal spreading is achieved for optimal phase fluctuation characteristics which is a consequence of the competition between diffusion due to decoherence and ballistic transport within the mean free path distance.
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