论文标题
非热系统的浮雕拓扑阶段
Floquet Topological Phases of Non-Hermitian Systems
论文作者
论文摘要
拓扑相转变中散装 - 边界对应关系（BBC）的分解是通过手性对称性和翻译不变性的系统效应来治愈的。但是，定期驾驶是工程外来拓扑阶段的活跃工具，破坏了手性的对称性，而不可避免的疾病破坏了翻译不变性。在这里，我们提出了一个方案，以检索BBC并建立对具有和不具有翻译不变性的定期驱动的非热式系统的拓扑阶段的完整描述。我们在非热毒schrieffer-Heeger模型中的方法的演示表明，周期性驾驶和疾病引起了异国情调的非热拓扑阶段和广泛可调的边缘状态和浮雕拓扑塑料的拓扑阶段。我们的结果提供了一种有用的方法，可以通过在非铁官系统中定期驾驶人为地合成外来阶段。
The non-Hermiticity caused breakdown of the bulk-boundary correspondence (BBC) in topological phase transition was cured by the skin effect for the systems with chiral symmetry and translation invariance. However, periodic driving, as an active tool in engineering exotic topological phases, breaks the chiral symmetry, and the inevitable disorder destroys the translation invariance. Here, we propose a scheme to retrieve the BBC and establish a complete description of the topological phases of the periodically driven non-Hermitian system both with and without the translation invariance. The demonstration of our method in the non-Hermitian Su-Schrieffer-Heeger model shows that exotic non-Hermitian topological phases of widely tunable numbers of edge states and Floquet topological Anderson insulator are induced by the periodic driving and the disorder. Our result supplies a useful way to artificially synthesize exotic phases by periodic driving in the non-Hermitian system.
