GAUGE-INVARIANCE IN FINITE QED

被引：19

作者：

DUTSCH, M

KRAHE, F

SCHARF, G

机构：

[1] Institut für Theoretische Physik der Universität Zürich, Zürich, CH-8001

来源：

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS | 1990年 / 103卷 / 06期

关键词：

Electromagnetic and unified gauge fields; Field theory; PACS; 12.20;

D O I：

10.1007/BF02799235

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

Gauge invariance is discussed in the causal approach to QED. It is proven that the iterative construction of the S-matrix by the method of Epstein and Glaser can be carried out in such a way that perturbative gauge invariance holds true. The proof rests on a careful analysis of the process of distribution splitting. In case of nontrivial distribution splitting gauge invariance implies the Ward-Takahashi identities. © 1990 Società Italiana di Fisica.

引用

页码：903 / 925

页数：23