论文标题
开放系统旋转运输和操作员重量耗散旋转链中
Open-system spin transport and operator weight dissipation in spin chains
论文作者
论文摘要
我们使用非平衡稳态来研究耗散辅助操作员进化（DAOE）对一维自旋链中传输缩放行为的影响。我们考虑XXZ家族中的三个模型：带交错的各向异性的XXZ模型，这是混乱的。 XXZ模型没有外部字段和可调相互作用，它是bethe ansatz可集成的，并且（在零相互作用极限中）自由费米斯可集成；以及无序的XY模型，该模型是自由屈光度的整合和安德森本地化的。我们发现证据表明，大道对运输的影响受到其对系统保守数量的影响的控制。在一定程度上，Daoe保留了这些对称性，它保留了系统运输特性的缩放；在破坏这些保守数量的范围内，它将系统推向传输的扩散尺度。
We use non-equilibrium steady states to study the effect of dissipation-assisted operator evolution (DAOE) on the scaling behavior of transport in one-dimensional spin chains. We consider three models in the XXZ family: the XXZ model with staggered anisotropy, which is chaotic; XXZ model with no external field and tunable interaction, which is Bethe ansatz integrable and (in the zero interaction limit) free fermion integrable; and the disordered XY model, which is free-fermion integrable and Anderson localized. We find evidence that DAOE's effect on transport is controlled by its effect on the system's conserved quantities. To the extent that DAOE preserves those symmetries, it preserves the scaling of the system's transport properties; to the extent it breaks those conserved quantities, it pushes the system towards diffusive scaling of transport.
