Locality and self-similarity
Seminar Room 1, Newton Institute
The talk points out how the quest for local physics and self-simiilarity combine in Dyson--Schwinger equations. It points out representation theoretic aspects starting from the Hopf- and Lie-algebraic approach to quantum fields. It considers Slavnov--Taylor identities for couplings as an example how quantum gauge symmetry organizes itself independently of a classical Lagrangian and discusses the principles behind.