String/Math Seminar: Masahito Yamazaki (Kavli IPMU, University of Tokyo) “Quiver Yangians and Crystal Melting”
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While the BPS state counting problem in general toric Calabi-Yau manifolds was solved a decade ago, it has long remained an unsolved problem to identify the underlying BPS state algebra. Recently, we solved this problem by introducing a new infinite-dimensional algebra, the BPS quiver Yangian. We constructed representations of the algebra in terms of crystal melting, and derived the representations … Read More