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Math-Physics Joint Seminar

Tuesday, April 17, 2018 - 4:30pm

Nikon Kurnosov

University of Georgia


University of Pennsylvania

DRL 4c2

Cohomology algebra of hyperk\"ahler manifolds is Frobenius algebra and the total Lie algebra of Lefschetz sl(2)-triples acting on it is so(4,b_2-2) by results of Loojenga-Lunts and Verbitsky. I will discuss the generalization of the classic Kuga-Satake construction which allows us to embed cohomology of hyperk\"ahler manifolds to cohomology of some complex torus which is morphism of Hodge structures (joint with M.Verbitsky and A.Soldatenkov). Also I will briefly explain some interesting corollaries.

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