Feynman Diagrams and Quantum Electrodynamics

Аннотация

The main purpose of Part I of this book is to develop the basic calculational method of quantum 􀀀eld theory
the formalism of Feynman diagrams We will then apply this formalism to computations in Quantum Electrodynamics
the quantum theory of electrons and photons Quantum Electrodynamics QED is perhaps the best fundamental phys ical theory we have The theory is formulated as a set of simple equations Maxwells equations and the Dirac equation whose form is essentially deter mined by relativistic invariance The quantummechanical solutions of these equations give detailed predictions of electromagnetic phenomena from macro scopic distances down to regions several hundred times smaller than the pro ton