Speaker
Cyril Closset
Description
After reviewing aspects of the 3d A-model, I will discuss recent results on the quantum K-theory of partial flag manifolds from the perspective of the 3d GLSM/QK correspondence. We define Schubert line defects that are defect line operators obtained by coupling appropriate 1d degrees of freedom to the 3d GLSM bulk fields, so that they flow in the infrared to Schubert classes in the QK ring. I will also discuss extensions of this approach to 4d GLSMs and elliptic quantum cohomology.