Explicit formulas for Eigenvalues of Capelli operators for the Lie superalgebra $\mathfrak{osp}(1|2n)$

Abstract

We define a natural basis for the algebra of $\mathfrak{gosp}(1|2n)$-invariant differential operators on the affine superspace ${\mathbb{C}}^{1|2n}$. We prove that these operators lie in the image of the centre of the enveloping algebra of $\mathfrak{gosp}(1|2n)$. Using this result, we compute explicit formulas for the eigenvalues of these operators on irreducible summands of $\mathcal{P}({\mathbb{C}}^{1|2n})$. This settles the Capelli eigenvalue problem for orthosymplectic Lie superalgebras in the cases that were not addressed in Sahi-Salmasian-Serganova. Our main technique relies on an explicit calculation of a certain determinant with polynomial entries.

References in corpus (1)

• The orthosymplectic superalgebra in harmonic analysis