High-order spectral singularity

Xu, H; Xie, LC; Jin, L

Jin, L (通讯作者),Nankai Univ, Sch Phys, Tianjin 300071, Peoples R China.

PHYSICAL REVIEW A, 2023; 107 (6):

Abstract

Exceptional point and spectral singularity are two types of singularity that are unique to non-Hermitian systems. Here, we report the high-order spect......

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