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arXiv 1602.06181physics.atom-phphysics.plasm-ph
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冷原子云中的空间不稳定性

Spatial instabilities in a cloud of cold atoms

Rudy Romain, Antoine Jallageas, Philippe Verkerk, Daniel Hennequin

摘要:

密集的冷原子云已被证明与等离子体相似。先前的研究表明,这种云表现出由长程相互作用引起的不稳定性。然而,他们没有描述动态的空间特性。在这封信中,我们研究实验的随机不稳定性的空间性质,并发现,动态是本地化的。在光谱域和空间域(主成分分析)中分析数据。这两种方法都不能用本征模来描述动力学,这表明空间和时间是不可分离的。

英文摘要:

Dense cold atomic clouds have been shown to be similar to plasmas. Previous studies showed that such clouds exhibit instabilities induced by long-range interactions. However they did not describe the spatial properties of the dynamics. In this Letter, we study experimentally the spatial nature of stochastic instabilities and find out that the dynamics is localized. Data are analyzed both in the spectral domain and in the spatial domain (principal component analysis). Both methods fail to describe the dynamics in terms of eigenmodes, showing that space and time are not separable.

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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