论文标题
R-DMFT研究相关系统的非铁皮皮肤效应：基于伪谱的分析
R-DMFT study of a non-Hermitian skin effect for correlated systems: analysis based on a pseudo-spectrum
论文作者
论文摘要
我们分析了一个平衡中的相关系统，并特别强调了诱导皮肤效应的非炎性拓扑。由真实空间动力学平均场理论计算得出的伪谱，阐明了其他伪 - 元素态出现了开放边界条件的出现，与状态对边界条件的依赖相比。我们进一步讨论了线间隙拓扑（另一种非富尔米特拓扑结构）如何影响伪谱。我们的数值模拟阐明了，尽管准粒子的阻尼会诱导非平凡的点间隙拓扑，但它会破坏非平凡的线间隙拓扑。以上两种效应也反映在局部伪柔性重量的温度依赖性中。
We analyze a correlated system in equilibrium with special emphasis on non-Hermitian topology inducing a skin effect. The pseudo-spectrum, computed by the real-space dynamical mean-field theory, elucidates that additional pseudo-eigenstates emerge for the open boundary condition in contrast to the dependence of the density of states on the boundary condition. We further discuss how the line-gap topology, another type of non-Hermitian topology, affects the pseudo-spectrum. Our numerical simulation clarifies that while the damping of the quasi-particles induces the non-trivial point-gap topology, it destroys the non-trivial line-gap topology. The above two effects are also reflected in the temperature dependence of the local pseudo-spectral weight.
