摘要翻译：
本文研究了在微米长尺度上具有简谐横向径向约束的简谐微管中正常稀超冷双组分费米气体的第一声。我们证明了沿轴向传播的声速强烈地依赖于系统的维数。特别地，我们预测了第一声速表现出壳层效应：通过增加密度，即通过诱导从一维到三维的交叉，第一声速表现出与谐波模态填充对应的跳跃。通过考虑40K原子讨论了这些效应的实验可实现性。
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英文标题：
《Shell Effects in the First Sound Velocity of an Ultracold Fermi Gas》
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作者：
Luca Salasnich and Flavio Toigo
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最新提交年份：
2007
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分类信息：

一级分类：Physics        物理学
二级分类：Statistical Mechanics        统计力学
分类描述：Phase transitions, thermodynamics, field theory, non-equilibrium phenomena, renormalization group and scaling, integrable models, turbulence
相变，热力学，场论，非平衡现象，重整化群和标度，可积模型，湍流
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一级分类：Physics        物理学
二级分类：Other Condensed Matter        其他凝聚态物质
分类描述：Work in condensed matter that does not fit into the other cond-mat classifications
在不适合其他cond-mat分类的凝聚态物质中工作
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英文摘要：
  We investigate the first sound of a normal dilute and ultracold two-component Fermi gas in a harmonic microtube, i.e. a cylinder with harmonic transverse radial confinement in the length-scale of microns. We show that the velocity of the sound that propagates along the axial direction strongly depends on the dimensionality of the system. In particular, we predict that the first-sound velocity display shell effects: by increasing the density, that is by inducing the crossover from one-dimension to three-dimensions, the first-sound velocity shows jumps in correspondence with the filling of harmonic modes. The experimental achievability of these effects is discussed by considering 40K atoms.
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PDF链接：
https://arxiv.org/pdf/708.4124