时间晶体：反磁电流能驱动电荷密度波旋转吗？
Time crystals: can diamagnetic currents drive a charge density wave into rotation?
摘要：
最近有人认为，一个非均匀系统可以在其基态自发旋转-因此是一个“时间晶体”，这是周期性的时间。在本文中，我们提出了一个非常简单的例子：一个超流环通过一个磁场，发展的电荷密度波（CDW）。一个简单的计算表明，抗磁电流不能驱动旋转的CDW，与一个清晰的图片的抵消机制。
英文摘要：
It has been argued recently that an inhomogeneous system could rotate spontaneously in its ground state - hence a 'time crystal' which is periodic in time. In this note we present a very simple example: a superfluid ring threaded by a magnetic field which develops a charge density wave (CDW). A naive calculation shows that diamagnetic currents cannot drive rotation of the CDW, with a clear picture of the cancellation mechanism.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
