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Counting Tensor Model Observables and Branched Covers of the 2-Sphere
(2014-02-04)
Lattice gauge theories of permutation groups with a simple topological action (henceforth permutation-TFTs) have recently found several applications in the combinatorics of quantum field theories (QFTs). They have been ...
Permutations and the combinatorics of gauge invariants for general N
Group algebras of permutations have proved highly useful in solving a number of problems in large N gauge theories. I review the use of permutations in classifying gauge invariants in one-matrix and multi-matrix models and ...