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math.RT2020
Hamiltonian reduction for affine Grassmannian slices and truncated shifted Yangians
Joel Kamnitzer, Khoa Pham, Alex Weekes
Generalized affine Grassmannian slices provide geometric realizations for weight spaces of representations of semisimple Lie algebras. They are also Coulomb branches, symplectic du…
math.RT2020★ 14 cited
BFN Springer Theory
Justin Hilburn, Joel Kamnitzer, Alex Weekes
Given a representation N of a reductive group G, Braverman-Finkelberg-Nakajima have defined a remarkable Poisson variety called the Coulomb branch. Their construction of this space…