论文标题
驾驶诱导的多个$ {\ cal pt} $ - 对称破坏过渡和在非热浮标quasicrystals中的重新进入本地化过渡
Driving-induced multiple ${\cal PT}$-symmetry breaking transitions and reentrant localization transitions in non-Hermitian Floquet quasicrystals
论文作者
论文摘要
时间周期性驾驶场与非弱势效应之间的合作可以赋予具有独特的光谱和运输特性的系统。在这项工作中，我们在一维准晶体中揭示了一类有趣的非热浮标物质，其特征是出现多个驾驶诱导的$ {\ cal pt} $ - 对称性破坏/恢复，移动性边缘，移动性边缘和重合本地化过渡。这些发现是通过研究定期淬灭非重点哈珀模型的光谱，水平统计，反向参与率和波袋动力学的证明。我们的结果不仅揭示了驱动的非铁型准晶体中本地化现象的丰富性，而且还强调了Floquet方法在开放系统中生成独特类型的非平衡阶段的优势。
The cooperation between time-periodic driving fields and non-Hermitian effects could endow systems with distinctive spectral and transport properties. In this work, we uncover an intriguing class of non-Hermitian Floquet matter in one-dimensional quasicrystals, which is characterized by the emergence of multiple driving-induced ${\cal PT}$-symmetry breaking/restoration, mobility edges, and reentrant localization transitions. These findings are demonstrated by investigating the spectra, level statistics, inverse participation ratios and wavepacket dynamics of a periodically quenched nonreciprocal Harper model. Our results not only unveil the richness of localization phenomena in driven non-Hermitian quasicrystals, but also highlight the advantage of Floquet approach in generating unique types of nonequilibrium phases in open systems.
