论文标题
在BEC-BCS跨界中捕获Feshbach诱导的配对物理
Capturing the Feshbach-induced Pairing Physics in the BEC-BCS Crossover
论文作者
论文摘要
通过在Fermi温度$ T_F $中给出的陷阱的效果在Feshbach共振的两体两通道模型中给出的特征能量，我们将重现BEC-BCS交叉中的实验性闭合通道分数$ Z $，并进入$^6 $ li aTomic Fermi Germi Atomic Fermi GEL的BCS策略。我们在Unitarity处获得了预期的行为$ z \ propto \ sqrt {t_f} $，以及最近测量的比例性常数。我们的结果也与BCS方面的$ Z $依赖性的最新测量值一致，在BCS方面，在实验和理论之间反复报道了BCS方面的差异。
By including the effect of a trap with characteristic energy given by the Fermi temperature $T_F$ in a two-body two-channel model for Feshbach resonances, we reproduce the experimental closed-channel fraction $Z$ across the BEC-BCS crossover and into the BCS regime of a $^6$Li atomic Fermi gas. We obtain the expected behavior $Z \propto \sqrt{T_F}$ at unitarity, together with the recently measured proportionality constant. Our results are also in agreement with recent measurements of the $Z$ dependency on $T_F$ on the BCS side, where a significant discrepancy between experiments and theory has been repeatedly reported.
