String Math Seminar: Elise LePage (UCB) “Aganagic’s invariant is Khovanov homology”
abstract: In recent work, Aganagic proposed a categorification of quantum link invariants using Lagrangian Floer theory in multiplicative Coulomb branches equipped with a potential. The braid group action arises from monodromy of this potential. We show that in the case g=sl(2), this braid group action agrees with the braid group action constructed by Webster, which proves that Aganagic’s proposal gives … Read More
String Math Seminar: Sujay Nair (UCB) “Inverse Hamiltonian reduction for affine W-algebras in type A”
Abstract: Inverse Hamiltonian reduction refers to a series of conjectural relations between W-algebras corresponding to distinct nilpotent orbits in a Lie algebra. I will outline a proof of this conjecture in type A that relies on novel geometric methods. Along the way, we shall encounter a technique for localising vertex algebras and, time permitting, speak briefly on the deformation theory … Read More