Factorization in quantum field theory: an exercise in Hopf algebras and local singularities
Abstract
Description
I discuss the role of Hochschild cohomology in Quantum Field Theory with particular emphasis on Dyson--Schwinger equations.
20 p., Contributed to "Frontiers in Number Theory, Physics and Geometry", Les Houches, March 2003 (minor typos corrected)
20 p., Contributed to "Frontiers in Number Theory, Physics and Geometry", Les Houches, March 2003 (minor typos corrected)