Stability conditions and Artin--Tits groups

We describe spaces of Bridgeland stability conditions on certain triangulated categories associated to Coxeter systems. These categories are defined algebraically using the category of modules for zigzag algebras associated to Coxeter systems, which we construct as distinguished (quadratic, graded) algebra objects in fusion categories. The resulting stability spaces are closely related to conjectural K($\pi$,1) spaces for Artin–Tits groups.