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arXiv 1208.2907cond-mat.quant-gas
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具有正散射长度的重-轻混合物中的普适四体态

Universal four-body states in heavy-light mixtures with positive scattering length

D. Blume

摘要:

已知具有普遍行为的四体状态的数量很少。这项工作为这个相对较短的列表增加了一类新的四体状态。我们预测了由三个相同的重费米子和第四个可区分的较轻粒子组成的重-轻混合物的普遍四体束缚态的存在,其质量比为$κ\gtrsim 9.5$,短程种间相互作用的特征在于正的s波散射长度。这些普遍状态的结构特性进行了讨论,并分析了有限范围的影响。利用超冷原子混合物可以在实验上实现和探测束缚态。

英文摘要:

The number of four-body states known to behave universally is small. This work adds a new class of four-body states to this relatively short list. We predict the existence of a universal four-body bound state for heavy-light mixtures consisting of three identical heavy fermions and a fourth distinguishable lighter particle with mass ratio $κ\gtrsim 9.5$ and short-range interspecies interaction characterized by a positive s-wave scattering length. The structural properties of these universal states are discussed and finite-range effects are analyzed. The bound states can be experimentally realized and probed utilizing ultracold atom mixtures.

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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