Seminars & Colloquia Calendar

The Drinfeld (or quantum) center of a monoidal category is a well-known categorical construction with applications to quantum field theory. From the point of view of representation theory, this construction gives the Drinfeld double of a Hopf algebra. Another related construction is the Heisenberg double of a Hopf algebra, giving the Weyl algebra as an example. In this talk, I will discuss how these constructions can be adapted to the setting of a monoidal category relative to a braided monoidal category. In this generality, the double bosonization of S. Majid is recovered on the algebraic level, and a purely categorical definition of a generalization of the Heisenberg double can be given, called the relative Hopf center. Further, generalizing work of V. Ostrik, a Morita dual of the relative Drinfeld center can be identified, giving a classification of categorical modules in the case of a finite tensor category. The relative Hopf center obtains a categorical action of the Drinfeld center this way, generalizing a result of J.-H. Lu.