Mobility edge of Stark many-body localization
Mobility edge of Stark many-body localization
复制标题
Stark 多体定位的移动优势
DOI：
10.1103/physreva.103.023323
复制
发表时间：
2021
影响因子：
2.9
通讯作者：
Lee Chaohong
中科院分区：
文献类型：
--
作者：
Zhang Li;Ke Yongguan;Liu Wenjie;Lee Chaohong
我们研究了一维无序倾斜晶格中相互作用的无自旋费米子的多体局域化。费米子在倾斜势的驱动下经历了从各态历经到斯塔克多体局域化的能量依赖性跃迁，这表现为即使在无序很弱的情况下，离域态和斯塔克多体局域态之间也会出现迁移率边。我们可以通过能级统计的有限尺度来具体诊断这些跃迁而不是交叉。此外，在斯塔克多体局域化中，纠缠熵服从面积律标度，类似于传统的多体局域化。
We investigate many-body localization of interacting spinless fermions in a one-dimensional disordered and tilted lattice. The fermions undergo energy-dependent transitions from ergodic to Stark many-body localization driven by the tilted potential, which are manifested by the appearance of mobility edges between delocalized states and Stark many-body localized states even when the disorder is weak. We can concretely diagnose these transitions rather than crossovers by finite-size scaling of energy-level statistics. Moreover, in the Stark many-body localization, the entanglement entropy obeys the area law scaling, in analogy to that in the conventional many-body localization.