DOUBLE AFFINE GRASSMANNIANS AND COULOMB BRANCHES OF 3dn= 4 QUIVER GAUGE THEORIES

摘要

We propose a conjectural construction of various slices for double affine Grass-mannians as Coulomb branches of 3-dimensional n= 4 supersymmetric affine quiver gauge theories. It generalizes the known construction for the usual affine Grassmannians, and makes sense for arbitrary symmetric Kac-Mody algebras.