3 papers
quant-ph2026
Unsupervised Topological Phase Discovery in Periodically Driven Systems via Floquet-Bloch State
Chen-Yang Wang, Jing-Ping Xu, Ce Wang +1
Floquet engineering offers an unparalleled platform for realizing novel non-equilibrium topological phases. However, the unique structure of Floquet systems, which includes multipl…
cond-mat.mes-hall2025
General theory for geometry-dependent non-Hermitian bands
Chenyang Wang, Jinghui Pi, Qinxin Liu +2
In two- and higher-dimensional non-Hermitian lattices, systems can exhibit geometry-dependent bands, where the spectrum and eigenstates under open boundary conditions depend on the…
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…