论文标题
半ssh哈伯德模型的拓扑遗传
Topological inheritance in half-SSH Hubbard models
论文作者
论文摘要
颗粒间相互作用与拓扑特征之间的相互作用可能导致异常现象。有趣的是，相互作用可能会在最初微不足道的系统中引起拓扑特征，正如我们为一维两组分模型的情况所说明的那样，其中一种组件受到su-schrieffer-heeger（ssh）二聚体的影响，而另一种则没有。我们表明，由于组分间相互作用，最初琐碎的一个组成部分的拓扑特性会引起。尽管对于大型相互作用，拓扑继承可以通过现场配对很容易解释，但我们表明，完全继承的阈值发生在弱相互作用下，尚未对组件进行配对。我们通过讨论散装和边缘特性以及动态观察力作为平均手性位移和电荷泵送来说明这种继承。
The interplay between interparticle interactions and topological features may result in unusual phenomena. Interestingly, interactions may induce topological features in an originally trivial system, as we illustrate for the case of a one-dimensional two-component Hubbard model in which one component is subjected to Su-Schrieffer-Heeger(SSH) dimerization, whereas the other one is not. We show that due to inter-component interactions the topological properties of one component are induced in the originally trivial one. Although for large interactions topological inheritance may be readily explained by on-site pairing, we show that the threshold for full inheritance occurs at weak interactions, for which the components are not yet paired. We illustrate this inheritance by discussing both bulk and edge properties, as well as dynamical observables as mean chiral displacement and charge pumping.
