Quantum Field Theory I - Lecture 28

Course: Quantum Field Theory I
Prof. Ricardo D. Matheus

Lecture 28: Quantum Electrodynamics (QED)

[felipemanoel]

Hi professor! Thank you for the class. I have a doubt, though. Could you explain if the structure of the S matrix, involving poles (essential ones) has something to do with unitarity? I mean,

iM \propto \frac{1}{p^2+m^2+i\epsilon}, p of-shell