Title: Holomorphic Surface Defects in 4d Chern-Simons Theory and the Bethe Equations

Abstract: There is a remarkable relationship between integrable systems in 1+1 dimensions (such as the Heisenberg spin chain) and a certain quantum gauge theory in four dimensions often referred to as four-dimensional Chern-Simons Theory. I will review aspects of this relationship and then describe some newer results involving holomorphic surface defects in this gauge theory and their relationship to the Bethe equations governing spin chains.

For help, please contact Webmaster.