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arXiv · 1905.13502

Relative character identities and theta correspondence

Wee Teck Gan·Xiaolei Wan
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Abstract

In this paper, we will determine the factorization of global period attached to the spherical variety $X:=\mathrm{SO}(n-1)\backslash \mathrm{SO}(n)$, which is a special case of the Sakellaridis-Venkatesh conjecture. The main idea is to build a connection between the periods of $X$ and the periods of the Whittaker case $N,\psi\backslash \mathrm{SL}_2$ (n even) or $N,\psi\backslash \mathrm{Mp}_2$ (n odd) using the tool of theta correspondence. In the local setting, we determine the Plancherel formula of $L^2(X)$, the relative character identities and give an explicite integral formula of transfer between $X$-side and Whittaker-side which coincides with the theory of transfer developed by Sakellaridis.

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Wee Teck Gan, Xiaolei Wan. 2019-05-31. Relative character identities and theta correspondence. https://arxiv.org/abs/1905.13502

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