论文标题
非铁质拓扑模式的自我修复
Self-healing of non-Hermitian topological skin modes
论文作者
论文摘要
非热（NH）系统的一个独特特征是NH皮肤效应，即在具有开放或半无限边界的晶格中大量散装型特征状态的边缘定位。与Hermitian系统中的扩展BLOCH波不同，皮肤模式是汉密尔顿的可正常的特征状态，它来自Bloch带能量光谱的固有非弱点点间隙拓扑。在这里，我们揭示了NH皮肤模式的引人入胜的特性，即自我修复，即在被时空潜力散布后自我重建形状的能力。
A unique feature of non-Hermitian (NH) systems is the NH skin effect, i.e. the edge localization of an extensive number of bulk-band eigenstates in a lattice with open or semi-infinite boundaries. Unlike extended Bloch waves in Hermitian systems, the skin modes are normalizable eigenstates of the Hamiltonian that originate from the intrinsic non-Hermitian point-gap topology of the Bloch band energy spectra. Here we unravel a fascinating property of NH skin modes, namely self-healing, i.e. the ability to self-reconstruct their shape after being scattered off by a space-time potential.
