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arXiv · 1805.06134

A certain Dirichlet series of Rankin-Selberg type associated with the Ikeda lift of half-integral weight

Shuichi Hayashida
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Abstract

In this article we obtain an explicit formula for certain Rankin-Selberg type Dirichlet series associated to certain Siegel cusp forms of half-integral weight. Here these Siegel cusp forms of half-integral weight are obtained from the composition of the Ikeda lift and the Eichler-Zagier-Ibukiyama correspondence. The integral weight version of the main theorem had been obtained by Katsurada and Kawamura. The result of the integral weight case is a product of $L$-function and Riemann zeta functions, while half-integral weight case is a infinite summation over negative fundamental discriminants with certain infinite products. To calculate explicit formula of such Rankin-Selberg type Dirichlet series, we use a generalized Maass relation and adjoint maps of index-shift maps of Jacobi forms.

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Shuichi Hayashida. 2018-05-17. A certain Dirichlet series of Rankin-Selberg type associated with the Ikeda lift of half-integral weight. https://doi.org/10.1112/s0025579319000172

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