RENORMALIZATION-GROUP FLOW IN QED - AN INVESTIGATION OF THE SCHWINGER-DYSON EQUATIONS

被引：32

作者：

RAKOW, PEL ^{[1
]}

机构：

[1] DESY,W-2000 HAMBURG 52,GERMANY

来源：

NUCLEAR PHYSICS B | 1991年 / 356卷 / 01期

关键词：

D O I：

10.1016/0550-3213(91)90140-S

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：

In this paper I investigate the behaviour of strongly coupled QED using a set of truncated Schwinger-Dyson equations which include the effects of vacuum polarisation. I pay particular attention to the renormalisation group flow. The model has a second-order chiral phase transition, but the renormalised photon coupling alpha-r is zero at the critical point. I also examine the effects of adding a four-fermion interaction, and find that even with this extra term the photon decouples at the phase transition.

引用

页码：27 / 45

页数：19

共 15 条

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