Renormalization of QED in an external field
Christian Brouder
Abstract
The Schwinger equations of QED are rewritten in three different ways as integral equations involving functional derivatives, which are called weak field, strong field, and SCF quantum electrodynamics. The perturbative solutions of these equations are given in terms of appropriate Feynman diagrams. The Green function that is used as an electron propagator in each case is discussed in detail. The general renormalization rules for each of the three equations are provided both in a non perturbative way (Dyson relations) and for Feynman diagrams.
Create a lesson
Related papers
Optical atomic clocks on all-optical atom chips
Yuri B. Ovchinnikov
Local polarization control of optical tweezer arrays
Xiangkai Sun, Richard Bing-Shiun Tsai, Andrew Winnicki et al.
Response of the near-threshold resonances of the dtμ molecular ion to an effective atomic 2s--2p splitting
Yi Zhang
Disorder-induced nuclear-transition doublet at nominally cubic 229Th sites
Andrei Derevianko
A scanning cavity for large area coherent coupling in atom interferometry
D. O. Sabulsky, Q. Beaufils, A. Bertoldi et al.
A solid-state nuclear clock based on VUV absorption spectroscopy of 229Th
Pengfei Wang, Xu-Fei Yin, Hanlin Wang et al.