%0 Journal Article
%T Uniqueness of Shalika functionals (the Archimedean case)
%A Avraham Aizenbud
%A Dmitry Gourevitch
%A Herve Jacquet
%J Mathematics
%D 2009
%I arXiv
%X Let F be either R or C. Let $(\pi,V)$ be an irreducible admissible smooth \Fre representation of GL(2n,F). A Shalika functional $\phi:V \to \C$ is a continuous linear functional such that for any $g\in GL_n(F), A \in \Mat_{n \times n}(F)$ and $v\in V$ we have $$ \phi[\pi g & A 0 & g)v] = \exp(2\pi i \re(\tr (g^{-1}A))) \phi(v).$$ In this paper we prove that the space of Shalika functionals on V is at most one dimensional. For non-Archimedean F (of characteristic zero) this theorem was proven in [JR].
%U http://arxiv.org/abs/0904.0922v2