论文标题
从BCS到SARMA SUPERFLUID的整个相变轨道共振附近的强烈相互作用的费米超氟的动态结构因子
Dynamic structure factors of a strongly interacting Fermi superfluid near an orbital Feshbach resonance across the phase transition from BCS to Sarma superfluid
论文作者
论文摘要
我们从理论上研究了具有随机相位近似的轨道Feshbach共振附近的强烈相互作用的费米超氟的动态结构因子，并在平衡的传统bardeen-cooper-schrieffer超级流体和持续的sarma sarma sarma sarma通过不断变化的化学潜力差异两种化学物质差异之间找到它们的动力特征。在BCS超流体的BEC状态下，动态结构因子可以通过分子激发和Leggett模式的相对位置或最低能量来区分相相的基础状态与脱离相位稳态的状态。在BCS和SARMA超流体之间的阶段过渡中，我们发现SARMA超流体的动态结构因子具有其自身的特定无缘式激发，这是在较小的转移动量下与集体声子激发混合的，并且在大量转移的动量上，这些不合时宜的Fermi sage sage sarare sarard save save sappains aarka a也相对强，并且相对较强超流体。
We theoretically investigate dynamic structure factors of a strongly interacting Fermi superfluid near an orbital Feshbach resonance with random phase approximation, and find their dynamical characters during the phase transition between a balanced conventional Bardeen-Cooper-Schrieffer superfluid and a polarized Sarma superfluid by continuously varying the chemical potential difference of two spin components. In a BEC-like regime of the BCS superfluid, dynamic structure factors can do help to distinguish the in-phase ground state from the out-of-phase metastable state by the relative location of molecular excitation and Leggett mode, or the minimum energy to break a Cooper pair. In the phase transition between BCS and Sarma superfluid, we find the dynamic structure factor of Sarma superfluid has its own specific gapless excitation at a small transferred momentum which is mixed with the collective phonon excitation, and also a relatively strong atomic excitation at a large transferred momentum because of the existence of unpaired Fermi atoms, these signals can be used to differentiate Sarma superfluid from BCS superfluid.
