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Aix-Marseille Université
Institut de Mathématiques de Marseille (I2M) - UMR 7373
Site Saint-Charles : 3 place Victor Hugo, Case 19, 13331 Marseille Cedex 3
Site Luminy : Campus de Luminy - Case 907 - 13288 Marseille Cedex 9

Séminaire

The twisted Gan-Gross-Prasad conjecture over finite fields and p-adic fields




Date(s) : 05/12/2023   iCal
14h00 - 15h00

The Gan-Gross-Prasad (GGP) conjecture studies a family of restriction problems for classical groups and proposes precised answers to these problems using the local and global Langlands correspondences. It also has a twisted variant in the Fourier-Jacobi case, which is called the twisted Gan-Gross-Prasad conjecture. In the first 15 minutes, I will present my progress on the twisted GGP problem over finite fields, which is motivated by the works of Reeder in Bessel case and Liu-Ma-Shi in Fourier-Jacobi case. In the remaining time, I will go through my work-in-progress on the local twisted GGP conjecture for tempered representations of general linear groups. The strategy is to adapt Waldspurger and Beuzart-Plessis’s method to develop a local relative trace formula as well as a twisted trace formula and compare their elliptic parts. Although the geometric sides of both trace formulae have not been developed, one can use a partial comparison and an instance for the Steinberg representation to prove the statement.

Emplacement
I2M Luminy - Ancienne BU, Salle Séminaire2 (RdC)

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