Wick Products and Combinatorial Hopf Algebras
Appears in collection : Algebraic Structures in Perturbative Quantum Field Theory: a conference in honour of Dirk Kreimer's 60th birthday
Wick products play a central role in both quantum field theory and stochastic calculus. They originated in Wick's work from 1950. In this talk we will describe Wick products using combinatorial Hopf algebra. Based on joint work with F. Patras, N. Tapia, L. Zambotti.
