Rankin-Selberg method for Jacobi forms of integral weight and of half-integral weight on symplectic groups

TL;DR

This paper investigates the analytic properties of Rankin-Selberg type Dirichlet series associated with holomorphic Jacobi cusp forms of both integral and half-integral weights, establishing their meromorphic continuation and functional equations.

Contribution

It introduces new Rankin-Selberg Dirichlet series for Jacobi forms, proving their meromorphic continuation, functional equations, and an identity relating Petersson norms across weights.

Findings

Established meromorphic continuation of the Dirichlet series.

Derived functional equations for these series.

Proved an identity linking Petersson norms of Jacobi forms.

Abstract

In this article we show analytic properties of certain Rankin-Selberg type Dirichlet series for holomorphic Jacobi cusp forms of integral weight and of half-integral weight. The numerators of these Dirichlet series are the inner products of Fourier-Jacobi coefficients of two Jacobi cusp forms. The denominators and the range of summation of these Dirichlet series are like the ones of the Koecher-Maass series. The meromorphic continuations and functional equations of these Dirichlet series are obtained. Moreover, an identity between the Petersson norms of Jacobi forms with respect to linear isomorphism between Jacobi forms of integral weight and half-integral weight is also obtained.