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The Efimov effect in lithium 6

机译:锂6中的Efimov效应

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摘要

We analyse the recent experiments investigating the low-energy physics of three lithium 6 atoms in three different internal states with resonant two-body scattering lengths. All observed features are qualitatively consistent with the expected Efimov effect, i.e. the effective universal three-body attraction that arises for large values of the scattering lengths. However, we find that a quantitative description at negative energy requires non-universal two- and three-body corrections due to presently unknown behaviour at short distance. An attempt to implement these corrections is made through energy-dependent parameters that are fitted to the experimental data.
机译:我们分析了最近的实验,这些实验研究了三个锂6原子在三种不同内部状态下的共振两体散射长度的低能物理学。所有观察到的特征在质量上都与预期的Efimov效应一致,即,有效的通用三体吸引因散射值大而产生。但是,我们发现,由于当前在短距离内的未知行为,在负能量处进行定量描述需要进行非普遍的两体和三体校正。通过适合于实验数据的与能量有关的参数来尝试实现这些校正。

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