A theorem of Mœglin-Waldspurger for covering groups

Abstract

Let $E$ be a non-Archimedian local field of characteristic zero and residue characteristic $p$. Let $\mathbf{G}$ be a connected reductive group defined over $E$ and $\pi$ an irreducible admissible representation of $G=\mathbf{G}(E)$. A result of C. Mœglin and J.-L. Waldspurger (for $p\ne 2$) and S. Varma (for $p=2$) states that the leading coefficient in the character expansion of $\pi$ at the identity element of $\mathbf{G}(E)$ gives the dimension of a certain space of degenerate Whittaker forms. In this paper we generalize this result of Mœglin-Waldspurger to the setting of covering groups $\tilde{G}$ of $G$.

13 pages

References in corpus (1)

• La formule des traces pour les revêtements de groupes réductifs connexes. I. Le développement géométrique fin

Cited by in corpus (1)

• Branching laws for the metaplectic cover of ${\mathrm{GL}}_2$