论文标题
异常随机多极驱动绝缘体
Anomalous Random Multipolar Driven Insulators
论文作者
论文摘要
到目前为止，已经确定了定期驱动的量子多体系统可以实现拓扑非平衡阶段而没有任何平衡阶段。在这里，我们表明，即使没有时间翻译对称性，物质的非平衡拓扑阶段也可能存在于多个驱动的系统中，以进行较长的参数性寿命。作为先决条件，我们首先证明了在随机多极驾驶下在两个维度中长期存在的prethermal Anderson定位的存在。然后，我们证明，即使没有明确定义的浮子操作员，该定位在拓扑上可能是不平凡的，具有量化的散装轨道磁化。我们进一步证实了这种异常的随机多极驱动绝缘子的存在，通过检测到边界处的量化电荷泵，这使其在实验上可观察到。
It is by now well established that periodically driven quantum many-body systems can realize topological nonequilibrium phases without any equilibrium counterpart. Here we show that, even in the absence of time translation symmetry, nonequilibrium topological phases of matter can exist in aperiodically driven systems for tunably parametrically long prethermal lifetimes. As a prerequisite, we first demonstrate the existence of longlived prethermal Anderson localization in two dimensions under random multipolar driving. We then show that the localization may be topologically nontrivial with a quantized bulk orbital magnetization even though there are no well-defined Floquet operators. We further confirm the existence of this anomalous random multipolar driven insulator by detecting quantized charge pumping at the boundaries, which renders it experimentally observable.
