arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1111.1943cond-mat.dis-nn
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局域波涨落的动力学

Dynamics of Fluctuations of Localized Waves

J. Wang, A. A. Chabanov, D. Y. Lu, Z. Q. Zhang, A. Z. Genack

摘要:

我们遵循强局域化样品中介观强度波动和相关性的时间演化。我们发现一个初始突发的相对传输波动随机一维(1D)样本由于弹道传输的到达时间的波动。相对涨落随后上升,然后在时间t_m下降到最小值,之后它们在一维模拟和准一维(Q1D)测量中迅速增加。对于t > 3t_m,1D和Q1D样本中的结果收敛于动态单参数缩放模型的预测。这些结果反映了变化的模式数量的影响,较长的寿命模式的增长,随着时间的延迟参与传输可观。

英文摘要:

We follow the temporal evolution of mesoscopic intensity fluctuations and correlation in strongly localized samples. We find an initial burst in relative transmission fluctuations in random one dimensional (1D) samples due to fluctuations in the arrival time of ballistic transmission. Relative fluctuations subsequently rise, then drop to a minimum at a time t_m, after which they increase rapidly in 1D simulations and quasi-1D (Q1D) measurements. For t > 3t_m, results in 1D and Q1D samples converge towards predictions of a dynamic single parameter scaling model. These results reflect the changing number of modes participating appreciably in transmission as the impact of longer lived modes grows with time delay.

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