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arXiv · 2110.08682

Uniform subconvex bounds for Rankin-Selberg $L$-functions

Qingfeng Sun
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Abstract

Let $f$ be a Maass cusp form for $\rm SL_2(\mathbb{Z})$ with Laplace eigenvalue $1/4+\mu_f^2$, $\mu_f>0$. Let $g$ be an arbitrary but fixed holomorphic or Maass cusp form for $\rm SL_2(\mathbb{Z})$. In this paper, we establish the following uniform subconvexity bound for the Rankin-Selberg $L$-function $L(s,f\otimes g)$ $$ L\left(1/2+it,f\otimes g\right)\ll (\mu_f+|t|)^{9/10+\varepsilon}, $$ where the implied constant depends only on $\varepsilon$ and $g$.

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Qingfeng Sun. 2021-10-16. Uniform subconvex bounds for Rankin-Selberg $L$-functions. https://arxiv.org/abs/2110.08682

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