Orateur
Paul Pearce
(University of Melbourne)
Description
Jean-Bernard has always been passionate about all things ADE. In this talk I will consider the construction of defects in the context of Yang-Baxter integrable classical, affine and twisted affine ADE RSOS lattice models. I will also discuss their associated fusion algebras with an emphasis on the $E_6$ and $D_4^{(1)}$ examples. For the classical ADE models, the defects satisfy the Ocneanu algebra for arbitrary system sizes and thus reproduce, in the continuum scaling limit, the well known CFT results of Petkova and Zuber 2001 for topological defects.