Ben Heidenreich (UMass Physics): What is Quantum Field Theory : Part 3

I discuss the main ingredients of a quantum field theory in modern language, with a particular emphasis on (generalized) symmetries. In this final part, I will focus on the dynamics of relativistic quantum field theories and their relation to Euclidean field theory, generalizing the canonical concepts introduced in the previous two talks and uncovering some new ones, such as defect operators.