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arXiv · 1802.02637

Doubling constructions: Global functoriality for non-generic cuspidal representations

Yuanqing Cai·Solomon Friedberg·Eyal Kaplan
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Abstract

We study the generalized doubling method for pairs of representations of $G\times GL_k$ where $G$ is a symplectic group, split special orthogonal group or split general spin group. We analyze the poles of the local integrals, and prove that the global completed $L$-function with a cuspidal representation of $GL_k$ twisted by a highly ramified Hecke character is entire. We obtain a new proof of the weak functorial transfer of cuspidal automorphic representations of $G$ to the natural general linear group, which is independent of the trace formula and its prerequisites, by combining our results with the Converse Theorem.

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Yuanqing Cai, Solomon Friedberg, Eyal Kaplan. 2018-02-07. Doubling constructions: Global functoriality for non-generic cuspidal representations. https://arxiv.org/abs/1802.02637

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