A queer Kac-Moody construction (2309.09559v1)

Abstract: We introduce a new, Kac-Moody-flavoured construction for Lie superalgebras, which seeks to incorporate phenomena of the queer Lie superalgebra. The idea of the generalization is to replace the maximal torus by a maximal quasitoral subalgebra, which has the representation theory of a family of (degenerate) Clifford superalgebras. Remarkably, we find that the theory is quite rigid, and a natural class of Lie superalgebras becomes apparent, which we call queer Kac-Moody algebras. We classify finite growth queer Kac-Moody algebras, which includes an $\mathfrak{so}(3)$-superconformal algebra, and give a new perspective on the distinctiveness of the queer Lie superalgebra.