7 citations · 9 across the 3 of their papers we have counts for
3 papers
quant-ph2024★ 2 cited
Zero modes of velocity field and topological invariant in quantum torus
Annan Fan, Shi-Dong Liang
We propose the velocity field approach to characterize topological invariants of quantum states. We introduce the indexes of the velocity field flow based on the zero modes of the…
quant-ph2023
Geometric criterion of topological phase transition for non-Hermitian systems
Annan Fan, Shi-Dong Liang
We propose a geometric criterion of the topological phase transition for non-Hermitian systems. We define the length of the boundary of the bulk band in the complex energy plane fo…
quant-ph2023★ 7 cited
Topological invariants of complex energy plane in non-Hermitian systems
Annan Fan, Shi-Dong Liang
Non-Hermitian systems as theoretical models of open or dissipative systems exhibit rich novel physical properties and fundamental issues in condensed matter physics.We propose a ge…