2 papers
cond-mat.mes-hall2024
Non-Hermitian Topology and Boundary Jordan Chains with Generalized Chiral Symmetry
Alex Westström, Wenbu Duan, Jian Li
We study a generalization of chiral symmetry applicable to non-Hermitian systems and its topological consequences on one-dimensional chains. We find a rich family of topological ph…
cond-mat.mes-hall2023
Topological Phases on Quantum Trees
Alex Westström, Wenbu Duan, Kangpei Yao +3
In this work, we present a theory for topological phases for quantum systems on tree graphs. Conventionally, topological phases of matter have been studied in regular lattices, but…