Application of Schur-Weyl duality to Springer theory

Abstract

In \cite{FMX19}, it is proved that the convolution algebra of top Borel-Moore homology on Steinberg variety of type $B/C$ realizes $U(sl_n^{\theta})$, where $sl_{n}^{\theta}$ is the fixed point subalgebra of involution on $sl_n$. So top Borel-Moore homology of the partial Springer's fibers gives the representations of $U(sl_n^{\theta})$. In this paper, we study these representations using the Schur-Weyl duality and Springer theory.