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Motivic Donaldson–Thomas invariants of the moduli stacks of parabolic Higgs bundles and bundles with connections

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Speaker: 
Yan Soibelman
Zugehörigkeit: 
Kansas State University
Datum: 
Die, 2019-07-30 10:00 - 11:00
Location: 
MPIM Lecture Hall

Using the ideas of motivic integration I will explain how to compute the "number" of semistable Higgs bundles  (maybe with parabolic structure) of fixed rank and degree on a smooth complex curve. Based on that result I am going to discuss a similar problem in the case of bundles with connections. If time permits, I will explain open questions, including a conjectural relation to Satake correspondence for affine Grassmannians over 2-dimensional local rings. This is a joint project with Roman Fedorov and Alexander Soibelman.

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