论文标题
MBL期是否有缓慢的粒子传输？
Is there slow particle transport in the MBL phase?
论文作者
论文摘要
我们分析了从MBL相深处的随机产物状态开始的两分纠缠和数熵的饱和值。通过研究这些熵的概率分布，我们发现纠缠熵的饱和值的生长源于重量从大量到指数尾巴的概率分布中的显着改组。相比之下，数字熵的饱和值的概率分布与系统大小合并，并显示出数量熵的值的急剧截止，该值对应于一个粒子在系统的两个半部分之间波动的一个粒子。因此，我们的结果排除了在MBL相深入的慢粒子运输，并确认较慢的纠缠熵产生源于构型纠缠。
We analyze the saturation value of the bipartite entanglement and number entropy starting from a random product state deep in the MBL phase. By studying the probability distributions of these entropies we find that the growth of the saturation value of the entanglement entropy stems from a significant reshuffling of the weight in the probability distributions from the bulk to the exponential tails. In contrast, the probability distributions of the saturation value of the number entropy are converged with system size, and exhibit a sharp cut-off for values of the number entropy which correspond to one particle fluctuating across the boundary between the two halves of the system. Our results therefore rule out slow particle transport deep in the MBL phase and confirm that the slow entanglement entropy production stems uniquely from configurational entanglement.
