论文标题
非官员Chern绝缘子的相图：手性边缘状态和散装对应关系的稳定
Phase Diagram of a Non-Hermitian Chern Insulator: Destabilization of Chiral Edge States and Bulk-Boundary Correspondence
论文作者
论文摘要
具有增益/损失类型的非热疗法的非热的Chern绝缘子显示出奇特的差距。当非平凡的Chern绝缘子相变为无间隙相时，由于手性边缘状态的不稳定，传导和价带被合并为一个频段。以前的非热散装对应的配方对于该系统不足，因为这种差距截止超出了其范围。在这里，我们通过考虑奇特的差距闭合并将其应用于非富尔米特式绝缘子来修改配方。我们证明，宽大的对应关系在系统中存在，包括手性边缘状态的不稳定。源自散装对应关系的相图显示与系统光谱一致。
A non-Hermitian Chern insulator with gain/loss-type non-Hermiticity shows a peculiar gap closing; when a nontrivial Chern insulator phase changes to a gapless phase, conduction and valence bands are combined into one band owing to destabilization of chiral edge states. A previous recipe of non-Hermitian bulk-boundary correspondence is insufficient for this system since such a gap closing is beyond its scope. Here, we revise the recipe by taking the peculiar gap closing into account and apply it to the non-Hermitian Chern insulator. We demonstrate that the bulk-boundary correspondence holds in the system including a destabilization of chiral edge states. A phase diagram derived from the bulk-boundary correspondence is shown to be consistent with spectra of the system.
