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arXiv 2008.09185physics.optics
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电磁极化粒子群散射的扩散粒子聚类方法

Clustering Diffused-Particle Method for Scattering from Large Ensembles of Electromagnetically Polarizable Particles

Lang Wang, Ilia L. Rasskazov, P. Scott Carney

摘要:

将Foldy-Lax方程推广到由具有电磁响应的粒子组成的介质中。结果被用来计算从粒子系综散射的场。通过分层聚类技术降低了计算复杂性,以实现10^10个粒子的模拟。有了这么多的粒子,我们能够看到场向体介质行为的过渡。对于非磁性材料,可观察的指数,介电常数,和有效的体相介质的磁导率是在很好地符合克劳修斯-莫索蒂关系。具有电磁响应的粒子的模拟场与广义有效介质理论的新的分析结果吻合得很好。

英文摘要:

The Foldy-Lax equation is generalized for a medium which consists of particles with both electric and magnetic responses. The result is used to compute fields scattered from ensembles of particles. The computational complexity is reduced by hierarchical clustering techniques to enable simulations with on the order of 10^10 particles. With so many particles we are able to see the transition to bulk media behavior of the fields. For non-magnetic materials, the observable index, permittivity, and permeability of the effective bulk medium are in good agreement with the Clausius-Mossotti relation. The fields simulated for particles with both electric and magnetic responses are in good agreement with new analytical results for a generalized effective medium theory.

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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