Dynkin automorphisms actions on Gaudin algebras

Abstract: In this paper, we study the action of a Dynkin automorphism $\sigma$ of a simple Lie algebra $\mathfrak{g}$ on the generalized Gaudin algebras. In particular, we show isomorphisms between the coinvariants of the generalized Gaudin algebras associated with $\mathrm{Lie}(\mathfrak{g}^\vee)$ and the generalized Gaudin algebras associated with $\mathrm{Lie}(\mathfrak{g}_\sigma^\vee)$, where $\mathfrak{g}_\sigma$ is the fixed point subalgebra.