2 papers
math.RT2025
Representations of shifted affine quantum groups and Coulomb branches
Michela Varagnolo, Eric Vasserot
We compare the integral category O of shifted affine quantum groups of symmetric and non symmetric types. To do so we compute the K-theoretic analog of the Coulomb branches with sy…
math.RT2025
Non symmetric quantum loop groups and K-theory
Michela Varagnolo, Eric Vasserot
We realize the quantum loop groups and shifted quantum loop groups of arbitrary types, possibly non symmetric, using critical K-theory. This generalizes the Nakajima construction o…