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arXiv 1005.4820cond-mat.dis-nn
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非线性无序系统中波相互作用的统计

Statistics of wave interactions in nonlinear disordered systems

D. O. Krimer, S. Flach

摘要:

本文研究了一维非线性无序系统中波的模-模相互作用性质。我们专注于i)的本地化体积的一个模式,它定义了相互作用的合作伙伴模式的数量,ii)的重叠积分,确定相互作用的强度,iii)的平均间距之间的相互作用模式的本征值,这设置了一个规模的非线性强度,和iv)共振概率的相互作用模式。我们的结果是根据最近的研究波包在无序非线性系统中的扩展进行讨论,并与随机链中的量子多体问题有关。

英文摘要:

We study the properties of mode-mode interactions for waves propagating in nonlinear disordered one-dimensional systems. We focus on i) the localization volume of a mode which defines the number of interacting partner modes, ii) the overlap integrals which determine the interaction strength, iii) the average spacing between eigenvalues of interacting modes, which sets a scale for the nonlinearity strength, and iv) resonance probabilities of interacting modes. Our results are discussed in the light of recent studies on spreading of wave packets in disordered nonlinear systems, and are related to the quantum many body problem in a random chain.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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