Special Session 44: The theory of cluster algebras and its applications

Casimir Actions of Parabolic Positive Representations

Ivan Chi Ho Ip
Hong Kong University of Science and Technology
Hong Kong
Co-Author(s):    Ryuichi Man, Gus Schrader
Abstract:
The parabolic positive representations of $\mathcal{U}_q(\mathfrak{g}_\mathbb{R})$ were previously constructed by quantizing the classical parabolic induction corresponding to arbitrary parabolic subgroups, such that the Chevalley generators act by positive self-adjoint operators on a Hilbert space. This generalizes the (standard) positive representations introduced earlier corresponding to the minimal parabolic (i.e. Borel) subgroup. In this talk, we will show how one can study the scalar actions of the generalized Casimir operators by certain reductions from the standard representations to the parabolic cases.