4 papers · 1 filter
Quantized Coulomb Branches of Separated Cotangent Type and Orthosymplectic Quivers
Yaolong Shen, Changjian Su, Rui Xiong
We propose a definition of the quantized Coulomb branches of separated cotangent type, and prove that the corresponding classical construction recovers the non-cotangent Coulomb br…
Twisted Yangians and Steinberg varieties of type C
Changjian Su, Yang Yang
We study the equivariant homology of the generalized Steinberg variety of type C and show that there exists a surjective algebra homomorphism from the twisted Yangian of type $\AII…
Quivers with Involutions and Shifted Twisted Yangians via Coulomb Branches
Yaolong Shen, Changjian Su, Rui Xiong
To a quiver with involution, we study the Coulomb branch of the 3d involution-fixed part of the quiver gauge theory. We show that there is an algebra homomorphism…
Affine quantum groups and Steinberg varieties of type C
Changjian Su, Weiqiang Wang
We provide a geometric realization of the quasi-split affine quantum group of type AIII in terms of equivariant K-groups of non-connected Steinberg varieties…