厄米矩阵
退化(生物学)
物理
隐身
功能(生物学)
各向异性
动力系统理论
量子力学
经典力学
统计物理学
光学
生物信息学
进化生物学
生物
作者
Kai Zhang,Chen Fang,Zhesen Yang
标识
DOI:10.1103/physrevlett.131.036402
摘要
In this paper, we introduce the concept of dynamical degeneracy splitting to describe the anisotropic decay behaviors in non-Hermitian systems. We demonstrate that systems with dynamical degeneracy splitting exhibit two distinctive features: (i) the system shows frequency-resolved non-Hermitian skin effect; (ii) Green's function exhibits anomalous at given frequency, leading to uneven broadening in spectral function and anomalous scattering. As an application, we propose directional invisibility based on wave packet dynamics to investigate the geometry-dependent skin effect in higher dimensions. Our work elucidates a faithful correspondence between non-Hermitian skin effect and Green's function, offering a guiding principle for exploration of novel physical phenomena emerging from this effect.
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