论文标题
史塔克多体定位的移动性边缘
Mobility edge of Stark many-body localization
论文作者
论文摘要
我们研究了在一维无序和倾斜晶格中相互作用的无旋转费的多体定位。费米子经历了能量依赖性的过渡到由倾斜电位驱动的鲜明的多体定位的过渡，即使疾病较弱，也是由于离域状态和鲜明的多体局部状态之间出现的迁移率边缘所表现出来的。我们可以通过有限尺寸的能量水平统计量表来具体诊断这些过渡，而不是交叉。此外，在鲜明的多体定位中，纠缠熵遵守区域定律的缩放，类似于传统的多体定位。
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.
