二维费米气体集体模的剪切粘性和阻尼
Shear viscosity and damping of collective modes in a two-dimensional Fermi gas
摘要：
利用动力学理论计算了二维费米气体与短程势相互作用的剪切粘性，其散射长度为$a_{2d}$。我们发现，动力学理论预测的剪切粘度熵密度比的强相互作用的二维气体是可比的三维幺正气体。利用我们的结果计算了囚禁费米气体中集体模的阻尼，并与最近在E. Vogt等人，arXiv：1111.1173。
英文摘要：
We compute the shear viscosity of a two dimensional Fermi gas interacting via a short range potential with scattering length $a_{2d}$ in kinetic theory. We find that kinetic theory predicts that the shear viscosity to entropy density ratio of a strongly interacting two dimensional gas is comparable to that of the three dimensional unitary gas. We use our results to compute the damping of collective modes in a trapped Fermi gas, and compare to experimental data recently obtained in E. Vogt et al., arXiv:1111.1173.
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