2 papers
quant-ph2025
Topological response in open quantum systems with weak symmetries
Ze-Min Huang, Sebastian Diehl, Xiao-Qi Sun
In open quantum systems, the interaction of the system with its environment gives rise to two types of symmetry: a strong one, where the system's symmetry charge is conserved exact…
cond-mat.str-el2025
Diagnosis of mixed-state topological phases in strongly correlated systems via disorder parameters
Shao-Hang Shi, Xiao-Qi Sun, Zi-Xiang Li
Characterizing topological phases for strongly interacting fermions in the mixed-state regime remains a major challenge. Here we introduce a general and numerically efficient frame…