Abstract
Topological phases of matter can be protected not only by on-site symmetries, but also by crystalline symmetries. In this talk, I will present the classification of 1D symmetry-protected topological (SPT) phases protected by both on-site and crystalline symmetries—referred to as modulated SPT phases—and show how it aligns with the crystalline equivalence principle through the MPS formalism. Furthermore, I will discuss their applications to Lieb–Schultz–Mattis (LSM) constraints and non-invertible symmetries.
This event is jointly organized by the Department of Physics and HK Quantum Institute of Science & Technology.
Anyone interested is welcome to attend.