Braid Group Action on $D^b(\mathfrak{M}_{\eta})$

Abstract

We construct an action of the braid group on the bounded derived category of coherent sheaves on hypertoric varieties arising from hyperplane arrangements. Using wall-crossing equivalences associated to paths in the complexified complement of the hyperplane arrangement, we show that these equivalences under certain conditions yield a functor from the Deligne groupoid to the category of triangulated equivalences. This gives rise to a canonical representation of the fundamental group, which recovers the braid group, acting on \(D^b(\mathfrak{M}_{\eta})\). This is a summary of Brad Hannigan-Daley's PhD thesis.