Status | Confirmed |
Seminar Series | PT-IHES |
Subjects | math-ph |
Date | Wednesday 23 January 2019 |
Time | 14:30 |
Institute | IHES |
Seminar Room | Amphithéâtre Léon Motchane |
Speaker's Last Name | Gunningham |
Speaker's First Name | Sam |
Speaker's Email Address | |
Speaker's Institution | Edinburgh University |
Title | Symmetries of Convolution Categories and the Quantum Ngo Action |
Abstract | I will describe a remarkable symmetric monoidal category associated to a reductive group G, which acts centrally on any G-category. This construction quantizes the universal centralizer group scheme, together with its action on Hamiltonian G-spaces used by Ngo in his proof of the Fundamental Lemma. The category and its central action appear most naturally in a Langlands dual incarnation, which is phrased in terms of convolution on the affine Grassmannian, via work of Bezrukavnikov, Finkelberg and Mirkovic. This is joint work with David Ben-Zvi. |
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