January 6, 2025 to April 4, 2025
IHP
Europe/Paris timezone

Theta Correspondence between principle series and its geometrization

Mar 10, 2025, 3:45 PM
1h
Amphitheater Darboux (IHP)

Amphitheater Darboux

IHP

11, Rue Pierre et Marie Curie 75005 Paris

Speaker

JIAJUN MA (Xiamen University)

Description

Consider the reductive dual pairs consisting of a symplectic group and an orthogonal group. The Harish-Chandra series of these two groups correspond to each other under the theta correspondence. In collaboration with Congling Qiu and Jialiang Zou, we explicitly computed this correspondence by analyzing the relevant Hecke algebra bimodules and applying a Tits deformation argument. This approach provides an alternative proof of Aubert-Michel-Rouquier's conjecture, which was initially settled by Shu-Yen Pan. In this presentation, we explore the geometrization of this construction. Consequently, we have derived a new description of the theta correspondence in terms of the Springer theory. This is a joint work with Congling Qiu, Jialiang Zou, and Zhiwei Yun.

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