link to recording:
https://huji.zoom.us/rec/share/LK2drpO2rgma8hKYmogFE75_5zS-LWnPx2h8BBUkx...



 Abstract:
 I will describe joint work with Constantin Teleman, in which we cast topological eyes on a well-studied system in condensed matter physics. In particular, we use the symmetry in a strong form and apply the technology of extended topological field theory. We obtain a proof of duality, construct a new dual theory for models based on a nonabelian group, and make dynamical predictions. The lecture will not assume any physics background.