简并费米气体中的散射共振
Scattering Resonances in a Degenerate Fermi Gas
摘要：
本文研究了当入射粒子与其中一种受限粒子相同时，一维双组分囚禁超流费米气体的弹性单粒子散射。我们的理论处理是基于Hartree-Fock基态的被困气体和组态相互作用的激发描述。我们确定的系统的散射相移和预测的Fano型散射共振是原子间配对的直接后果。我们描述了散射共振的主要特征，并与BCS平均场论的结果进行了比较。
英文摘要：
We consider elastic single-particle scattering from a one-dimensional two-component trapped superfluid Fermi gas when the incoming projectile particle is identical to one of the confined species. Our theoretical treatment is based on the Hartree-Fock ground state of the trapped gas and a configuration-interaction description of the excitations. We determine the scattering phase shifts for the system and predict Fano-type scattering resonances that are a direct consequence of inter-atomic pairing. We describe the main characteristics of the scattering resonances and make a comparison with the results of BCS mean-field theory.
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