Non-Invertible Symmetry and Entanglement Entropy

A conference talk presented by Yichul Choi from Stony Brook University exploring the relationship between non-invertible symmetry and entanglement entropy as part of the "Generalized Symmetries: High-Energy, Condensed Matter and Mathematics" KITP conference held in April 2025. Delve into cutting-edge theoretical physics research that builds on the last decade's progress in quantum field theory, where symmetries are interpreted through topological defects acting on operator spaces. Learn about this generalized notion of symmetries that has revealed unexpected physical effects across condensed matter, high energy physics, and quantum gravity. This 41-minute presentation was recorded at the Kavli Institute for Theoretical Physics at UC Santa Barbara, coordinated by experts Maissam Barkeshli, Michele Del Zotto, Sakura Schafer-Nameki, and Shu-Heng Shao.