论文标题
粒子孔对称多体局部系统中的异常扩散
Anomalous diffusion in particle-hole symmetric many-body localized systems
论文作者
论文摘要
在这项工作中，我们探测了粒子孔对称多体（MBL）相的动力学。我们提供的数值证据表明，与常规MBL案例不同，它可以以代数传播和电荷的代数传播来表征。我们通过形成结合状态的形成来解释这种异常扩散的机制，该状态通过远程共振连贯地传播。通过投射到粒子孔对称模型的两个粒子扇区上，我们表明形成和观察到的次延伸动力学是对称性与相互作用之间相互作用的结果。
In this work we probe the dynamics of the particle-hole symmetric many-body localized (MBL) phase. We provide numerical evidence that it can be characterized by an algebraic propagation of both entanglement and charge, unlike in the conventional MBL case. We explain the mechanism of this anomalous diffusion through a formation of bound states, which coherently propagate via long-range resonances. By projecting onto the two-particle sector of the particle-hole symmetric model, we show that the formation and observed subdiffusive dynamics is a consequence of an interplay between symmetry and interactions.
