Titlebook: Quantum Electrodynamics; Walter Greiner,Joachim Reinhardt Textbook 19942nd edition Springer-Verlag Berlin Heidelberg 1994 Electromagnetism

安装

The Propagators for Electrons and Positrons,ng to (1.28), the probability amplitude consists of factors that describe the propagation of the particle between the particular scattering events (caused by the interaction .(.)) and when integrated over the space-time coordinates of the points of interaction represent the .th-order scattering process of the particle.

DEFER

Two-Particle Systems,er than the other the problem can be considerably simplified: one solves the Dirac equation for the light particle with an additional external potential, which is produced by the heavier particle. Because of the large mass ratio the influence of the lighter particle on the heavier one can be neglected.

Fraudulent

Quantum Electrodynamics of Spinless Bosons,ase is scalar (or pseudoscalar) bosons, which have spin O. In the following we want to develop the theory of the electromagnetic interaction of these particles, which is also known as “scalar electrodynamics”. We can take over many ingredients of the theory from Chapters 2 and 3 either directly or with only marginal modifications.

座右铭

Propagators and Scattering Theory,s the quantum field theory of electrons and positrons (the electron-positron field) and photons (the electromagnetic or radiation field). The theory also applies to the known heavy leptons (. and .) and, in general, can be used to describe the electromagnetic interaction of other charged elementary

conception

畏缩

胡言乱语

Femish

Two-Particle Systems,far. This is particularly so if we deal with .: the particles stay together infinitely long and they can therefore interact arbitrarily often as depicted in Fig. 6.1. It is clear that this situation cannot be described by the summation of a few Feynman diagrams. If one of the particles is much heavi

夜晚

Pelago