Application of qq-characters

Rutgers University

2:30pm, Jan 4, 2019, Friday

Correlation functions of certain BPS observables in four-dimensional N=2 supersymmetric gauge theories are related to quantities in two-dimensional conformal field theories or deformations thereof. It turns out that qq-characters play an important role in understanding this class of correspondence. After reviewing the basis of qq-characters, I will discuss several interesting applications.