2 papers
cond-mat.str-el2025
Anomaly-free symmetries with obstructions to gauging and onsiteability
Wilbur Shirley, Carolyn Zhang, Wenjie Ji +1
We present counterexamples to the lore that symmetries that cannot be gauged or made on-site are necessarily anomalous. Specifically, we construct unitary, internal symmetries of t…
cond-mat.str-el2025
Bulk Excitations of Invertible Phases
Wenjie Ji, David T. Stephen, Michael Levin +1
Recent developments in the study of topological defects highlight the importance of understanding the multi-dimensional structure of bulk excitations inside a quantum system. When…