Tensor models, Kronecker coefficients and permutation centralizer algebras
Tensor models, Kronecker coefficients and permutation centralizer algebras
A bstract We show that the counting of observables and correlators for a 3-index tensor model are organized by the structure of a family of permutation centralizer algebras. These algebras are shown to be semi-simple and their Wedderburn-Artin decompositions into matrix blocks are given in terms of Clebsch-Gordan coefficients of …