Michael Finkelberg, Alexander Tsymbaliuk
Published 2017-08-05Version 1
We introduce the shifted quantum affine algebras. They map homomorphically into the quantized Coulomb branches of $4d\ {\mathcal N}=2$ SUSY quiver gauge theories. In type $A$, they are endowed with a coproduct, and they act on the equivariant $K$-theory of parabolic Laumon spaces. In type $A_1$, they are closely related to the open relativistic quantum Toda of type $A$.
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