论文标题
一般量子系统上时间翻译对称性的自发对称性分解的不存在：任何宏观顺序参数都不会移动！
Nonexistence of spontaneous symmetry breakdown of time-translation symmetry on general quantum systems: Any macroscopic order parameter moves not!
论文作者
论文摘要
这篇综述告知，自1970年代以来，在C* - 代数量子统计力学中已经知道了真正的量子时间晶体的不可能。 KMS条件表明，在一般量子系统中，时间翻译对称性的自发分解是不可能的。特别是，任何非平凡的顺序，例如周期性，准周期和混乱秩序，都不能在平衡状态的时间方向上存在，这意味着从一开始就排除了真正的量子时间晶体。
This review informs that the impossibility of genuine quantum time crystals has been known in the C*-algebraic quantum statistical mechanics since 1970s. The KMS condition implies that spontaneous breakdown of time-translation symmetry is impossible in general quantum systems. In particular, any non-trivial order, such as periodic, quasi-periodic, and chaotic order cannot exist in the time direction of equilibrium states, meaning that genuine quantum time crystals are excluded from the outset.
