3 papers
cond-mat.str-el2026
From Topological Order to Mixed-State Phases: A Ground-State Probe of Fractionalized Excitations
Yunlong Zang, Yu-Bin Li, Shenghan Jiang
How do we detect topological phases from a single ground state? Entanglement entropy and spectrum have long been the standard tools -- but the reduced density matrix (RDM) itself c…
cond-mat.str-el2026
Entanglement Measure Response to Modular Flow and Chiral Topological Phases
Yunlong Zang
Recent years have witnessed significant progress in the entanglement-based characterization of quantum phases of matter. The primary objects of interest are the reduced density mat…
cond-mat.str-el2025
Diagnosing 2D symmetry protected topological states via mixed state anomaly
Chao Xu, Yunlong Zang, Yixin Ma +2
Symmetry-protected topological (SPT) phases are short-range entangled quantum states characterized by anomalous edge behavior, a manifestation of the bulk-boundary correspondence f…