Description:The authors of this classic physics text develop a canonical field
theory and relate it to Feynman graph expansion. With graph analysis,
they explore the analyticity properties of Feynman amplitudes to
arbitrary orders, illustrate dispersion relation methods, and prove the
finiteness of renormalized quantum electrodynamics to each order of the
interaction. 1965 edition. Physics - Quantum PhysicsPhysics - Quantum Physics