论文标题
Pauli Crystal在摇动的光学陷阱中熔化
Pauli crystal melting in shaken optical traps
论文作者
论文摘要
保利晶体是由于其潜在的Pauli排斥而导致的无与伦比的费米子系统中出现的有序几何结构。最近在实验中观察到了保利晶体的变形 - 通常称为熔化 - 但导致其的机制尚不清楚。我们通过研究n = 6个费米子的熔化动力学来解决这个问题，这是通过使用数值模拟和浮雕理论的组合，通过陷阱（各向异性和非谐波性）中的周期性驾驶和实验缺陷的函数来解决这个问题。令人惊讶的是，我们揭示了保利晶体的融化不仅仅是系统能量增加的直接结果，而是与陷阱几何形状和浮雕模式的种群有关。我们表明，陷阱中没有熔化而没有瑕疵，并且仅是由于陷阱中有足够大的摇动振幅而触发的。
Pauli crystals are ordered geometric structures that emerge in trapped noninteracting fermionic systems due to their underlying Pauli repulsion. The deformation of Pauli crystals - often called melting - has been recently observed in experiments, but the mechanism that leads to it remains unclear. We address this question by studying the melting dynamics of N=6 fermions as a function of periodic driving and experimental imperfections in the trap (anisotropy and anharmonicity) by employing a combination of numerical simulations and Floquet theory. Surprisingly, we reveal that the melting of Pauli crystals is not simply a direct consequence of an increase in system energy, but is instead related to the trap geometry and the population of the Floquet modes. We show that the melting is absent in traps without imperfections and triggered only by a sufficiently large shaking amplitude in traps with imperfections.
