Titlebook: Quantum Electrodynamics; Walter Greiner,Joachim Reinhardt Textbook 2009Latest edition Springer-Verlag Berlin Heidelberg 2009 Boson.electro

Lethargic

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

Osteons

TEM

The Scattering Matrix in Higher Orders,ng constant .≈1/137 the first term alone frequently gives reliable results. Within a?satisfactory theory, however, one should be able to calculate the contributions of higher orders too. As we shall see in QED – and the same is true in all quantum field theories – this leads to characteristic diffic

不在灌木叢中

Two-Particle Systems,far. In the following we want to write down an exact equation for the two-particle system, at least in principle, even if it turns out that it is too difficult to find an exact solution for this equation. Then we shall study an approximation that again leads to a?kind of Dirac equation with an inter

Canvas

,Quantum Electrodynamics of Spinless?Bosons, by the Dirac equation. The theory of quantum electrodynamics describes the interaction of these particles with each other and with the photon field in a?very satisfying way. In principle, nothing prevents us from trying to construct a?similar theory also for other kinds of particles. The simplest c

LAPSE

institute

下邊深陷

Two-Particle Systems,difficult to find an exact solution for this equation. Then we shall study an approximation that again leads to a?kind of Dirac equation with an interaction potential (the Breit interaction, see Example?6.4).

novelty

Quantum-Electrodynamical Processes,g electrons, positrons, and photons. These rules, although derived in a?nonrigorous fashion, provide a?correct and complete description of QED processes. The same set of “Feynman rules” results from a?systematic treatment within the framework of quantum field theory.

obviate

The Scattering Matrix in Higher Orders, In what follows we shall discuss “renormalization in the lowest nontrivial order of perturbation theory. The finite theory obtained in this way can then be applied to calculate measurable effects of vacuum fluctuations, i.e. the interaction with virtually created particles.