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quant-ph2025
Scaling behavior of dissipative systems with imaginary gap closing
Jinghui Pi, Xingli Li, Yangqian Yan
Point-gap topology, characterized by spectral winding numbers, is crucial to non-Hermitian topological phases and dramatically alters real-time dynamics. In this paper, we study th…
quant-ph2025
Geometric origin of self-intersection points in non-Hermitian energy spectra
Jinghui Pi, Chenyang Wang, Yong-Chun Liu +1
Unlike Hermitian systems, non-Hermitian energy spectra under periodic boundary conditions can form closed loops in the complex energy plane, a phenomenon known as point gap topolog…