么正性费米气体射频谱中的双峰
Twin peaks in rf spectra of Fermi gases at unitarity
摘要：
本文计算了正相平衡和非平衡超冷费米气体在么正态下的射频谱。对于均匀的情况下，大多数和少数组件的频谱总是有一个单一的峰值，即使在赝能隙制度。我们还展示了如何在最近的实验中观察到的双峰结构出现由于被困气体的不均匀性。在Schunck等人[Science 316，867，（2007）]的最近实验中，在临界温度以上观察到的主要实验特征在没有拟合参数的情况下被恢复。
英文摘要：
We calculate the radio-frequency spectrum of balanced and imbalanced ultracold Fermi gases in the normal phase at unitarity. For the homogeneous case the spectrum of both the majority and minority components always has a single peak even in the pseudogap regime. We furthermore show how the double-peak structures observed in recent experiments arise due to the inhomogeneity of the trapped gas. The main experimental features observed above the critical temperature in the recent experiment of Schunck et al. [Science 316, 867, (2007)] are recovered with no fitting parameters.
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