论文标题
绝热和不可逆的经典离散时间晶体
Adiabatic and irreversible classical discrete time crystals
论文作者
论文摘要
我们模拟了放置在磁性六角模式上方的顺磁性胶体颗粒的动力学，并暴露于外部磁场沿控制环的方向定期改变其方向。在一个单位细胞上方的三个胶体颗粒的构象中，以外部场的频率的一半响应，在任意低频下产生了一个时间晶体。绝热时间晶体发生是由于固定歧管的非平凡拓扑结构。当将不同单位细胞中的胶体颗粒耦合时，许多身体效应会导致拓扑隔离的时间晶体的形成以及不同绝热可逆和非绝热不可逆的时空结晶布置之间的动态相变。
We simulate the dynamics of paramagnetic colloidal particles that are placed above a magnetic hexagonal pattern and exposed to an external field periodically changing its direction along a control loop. The conformation of three colloidal particles above one unit cell adiabatically responds with half the frequency of the external field creating a time crystal at arbitrary low frequency. The adiabatic time crystal occurs because of the non-trivial topology of the stationary manifold. When coupling colloidal particles in different unit cells, many body effects cause the formation of topologically isolated time crystals and dynamical phase transitions between different adiabatic reversible and non-adiabatic irreversible space-time-crystallographic arrangements.
