BPS indices, modularity and perturbations in quantum K-theory

BPS indices, modularity and perturbations in quantum K-theory

Blog Article

Abstract We study a perturbation family of N 05rb shades eq $$ mathcal{N} $$ = 2 3d gauge theories and its relation to quantum K-theory.A 3d version of the Intriligator-Vafa formula is given for the quantum K-theory ring of Grassmannians.The 3d BPS half-index of the gauge theory is connected to the theory of bilateral hypergeometric q-series, and to modular q-characters of a class of conformal field theories in a certain massless limit.

Turning on 3d Wilson lines at torsion points leads to mock modular behavior.Perturbed correlators in the IR regime are computed by determining the UV-IR map in verbatim coupons the presence of deformations.