论文标题
费米气体不平衡的超氟正常量子相变
Superfluid-Normal Quantum Phase Transitions in an Imbalanced Fermi Gas
论文作者
论文摘要
我们研究了不对称的两组分量Fermi气体的超流量到正常的零温度量子相变，这是化学势不平衡$ h $的函数。对同质和被困的不平衡系统进行计算。我们集中于单位性，其特征是相互作用参数$ k_f a $，其中大多数当前实验都被实现。对于均质系统，我们确定可能发生相变的关键化学潜在不平衡$ H_C $。在被困的气体的情况下，我们展示了$ H_C $如何从实验观察结果中确定。
We investigate the superfluid-to-normal zero temperature quantum phase transitions of asymmetric two-component Fermi gases as a function of the chemical potential imbalance $h$. The calculations are performed for homogeneous and trapped imbalanced systems. We concentrate at unitarity, characterized by a divergent interaction parameter $k_F a$, where most of the current experiments are realized. For homogeneous systems, we determine the critical chemical potential imbalance $h_c$ at which possible phase transitions occur. In the case of trapped gases, we show how $h_c$ can be consistently determined from experimental observations.
