[dottormate] "Unusual" seminar announcement - Jonas Schnitzer

[MICHELE SCHIAVINA]

Apologies, I forgot the most important thing: the seminar is
*WEDNESDAY THE 13th of NOVEMBER *

Best,
Michele

Il giorno mar 12 nov 2024 alle ore 10:31 MICHELE SCHIAVINA <
michele.schiavina a unipv.it> ha scritto:

> Dear all,
>
> This is a slightly unusual seminar announcement.
> Our own Jonas Schnitzer is giving a talk for the North Atlantic NC
> Geometry Seminar series, which will be streamed from here (aula riunioni
> Piano C).
> Please note that this is going to be *1.5h long, and it starts at 17.00
> sharp*.
>
> You can attend in person if you are in Pavia, or join the Seminar's zoom
> platform, as specified below.
>
> Best
> Michele
>
> North Atlantic Noncommutative Geometry Seminar
> (
> https://www.mimuw.edu.pl/en/seminars/north-atlantic-noncommutative-geometry-seminar/
> )
>
> youtube: https://www.youtube.com/channel/UCnHfrrAKk9Jaaw8oC2s_dSQ
>
> Zoom platform link:
> https://uw-edu-pl.zoom.us/j/95105055663?pwd=TTIvVkxmMndhaHpqMFUrdm8xbzlHdz09
>
> Meeting ID: 951 0505 5663 Passcode: 924338
>
> Time: 17.00 (sharp!)
>
> Place: Sala Riunioni Piano C (and all of the above)
>
> Speaker: Jonas Schnitzer (University of Pavia)
>
> Title: *THE QUANTIZATION OF MOMENTUM MAPS AND ADAPTED FORMALITY MORPHISMS*
>
> *Abstract: *
> If a Lie group acts on a Poisson manifold by Hamiltonian symmetries, there
> is a well-understood way to get rid of unnecessary degrees of freedom and
> pass to a Poisson manifold of a lower dimension. This procedure is known as
> the Poisson-Hamiltonian reduction. There is a similar construction for
> invariant star products admitting a quantum momentum map, which leads to a
> deformation quantization of the Poisson-Hamiltonian reduction of the
> classical limit. The existence of quantum momentum maps is only known in
> very few cases, like linear Poisson structures and symplectic manifolds.
> The aim of this talk is to fill this gap and show that there is a universal
> way to find quantized momentum maps using so-called adapted formality
> morphisms, which exist for good enough Lie-group actions. This is a work in
> progress with Chiara Esposito, Ryszard Nest and Boris Tsygan.
>
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