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Math-Physics Joint Seminar

Tuesday, September 10, 2019 - 4:30pm

Marco Castronovo

Rutgers University


University of Pennsylvania

DRL 4c2

Gross-Hacking-Keel-Kontsevich proposed a construction of Landau-Ginzburg models for cluster varieties. This class includes many examples of interest in representation theory, the simplest of which are perhaps the Grassmannians Gr(k,n). I will report on recent progress in establishing homological mirror symmetry in this case, building on work of Marsh-Rietsch and Rietsch-Williams. In particular, I will highlight two results: a complete proof in the case n prime, where the Fukaya category is generated by the monotone Lagrangian torus fiber of an integrable system introduced by Guillemin-Sternberg in the '80s; the existence of exotic monotone Lagrangian tori corresponding to different charts of the mirror, obtained by bootstrapping from the initial torus through a mutation procedure which is compatible with the general picture of mirror symmetry for Fano varieties put forth by Coates, Corti, Galkin, Golyshev and others.