Simultaneous non-vanishing of central values of $\mathrm{GL}(2)\times \mathrm{GL}(3)$ and $\mathrm{GL}(3)\times \mathrm{GL}(3)$ $L$-functions

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Main Author: Pan, Junjie
Format: Preprint
Published: 2025
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author Pan, Junjie
author_facet Pan, Junjie
contents Let $g$ denote a fixed holomorphic Hecke cusp form of weight $k \equiv 0 \pmod{4}$ on $\mathrm{SL}_2(\mathbb{Z})$, and let $π$ be a fixed cuspidal automorphic representation of $\mathrm{GL}_3$. In this paper, we establish an asymptotic formula for the first moment of the product \[L(1/2,g\times F)L(1/2,π\times F),\] where $F$ runs over an orthonormal basis of Hecke-Maaß cusp forms of level $q$ on $\mathrm{GL}_3$. As an application, we deduce that $L(1/2, g\times F)L(1/2,π\times F)\neq 0$ for infinitely many such forms $F$.
format Preprint
id arxiv_https___arxiv_org_abs_2510_15704
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Simultaneous non-vanishing of central values of $\mathrm{GL}(2)\times \mathrm{GL}(3)$ and $\mathrm{GL}(3)\times \mathrm{GL}(3)$ $L$-functions
Pan, Junjie
Number Theory
11F70(Automorphic forms, L-functions), 11M41(L-functions, special values)
Let $g$ denote a fixed holomorphic Hecke cusp form of weight $k \equiv 0 \pmod{4}$ on $\mathrm{SL}_2(\mathbb{Z})$, and let $π$ be a fixed cuspidal automorphic representation of $\mathrm{GL}_3$. In this paper, we establish an asymptotic formula for the first moment of the product \[L(1/2,g\times F)L(1/2,π\times F),\] where $F$ runs over an orthonormal basis of Hecke-Maaß cusp forms of level $q$ on $\mathrm{GL}_3$. As an application, we deduce that $L(1/2, g\times F)L(1/2,π\times F)\neq 0$ for infinitely many such forms $F$.
title Simultaneous non-vanishing of central values of $\mathrm{GL}(2)\times \mathrm{GL}(3)$ and $\mathrm{GL}(3)\times \mathrm{GL}(3)$ $L$-functions
topic Number Theory
11F70(Automorphic forms, L-functions), 11M41(L-functions, special values)
url https://arxiv.org/abs/2510.15704