论文标题
通过反对时间对称耦合的Untying链接
Untying links through anti-parity-time-symmetric coupling
论文作者
论文摘要
我们揭示了如何在耗散sublattice-Angrattice-Memmortric-Metormatric-Metormatric-Metigration-Metormatric-MeTigre-MeTigre-Mewite-Atigromation Poptic Policogic晶格中取消矢量场链接的关系。准二维两波段系统的拓扑编码在与Bloch Hamiltonian相关的矢量场的几何拓扑中进行了编码。链接的矢量场反映了非平凡阶段的拓扑结构。拓扑相转变与特殊点的矢量场链路的取消趋势同时发生。违反直觉，更具建设性地创造了非平凡的拓扑结构。链接数预测了拓扑光子零模式的数量。
We reveal how the vector field links are untied under the influence of anti-parity-time-symmetric couplings in a dissipative sublattice-symmetric topological photonic crystal lattice. The topology of the quasi-one-dimensional two-band system is encoded in the geometric topology of the vector fields associated with the Bloch Hamiltonian. The linked vector fields reflect the topology of the nontrivial phase. The topological phase transition occurs concomitantly with the untying of the vector field link at the exceptional points. Counterintuitively, more dissipation constructively creates a nontrivial topology. The linking number predicts the number of topological photonic zero modes.
