Improved hard-thermal-loop effective action for hot QED and QCD

被引：51
|
作者：
Flechsig, F [1 ]
Rebhan, AK [1 ]
机构：
[1] DESY,THEORY GRP,D-22603 HAMBURG,GERMANY
来源：
NUCLEAR PHYSICS B | 1996年 / 464卷 / 1-2期
关键词：
D O I：
10.1016/0550-3213(96)00023-5
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：
The conventional results for hard thermal loops, which are the building blocks of resummed perturbation theory in thermal field theories, have collinear singularities when external momenta are light-like. It is shown that by taking into account asymptotic thermal masses these singularities are removed. The thus improved hard thermal loops can be summarized by compact gauge-invariant effective actions, generalizing the ones found by Taylor and Wong, and by Braaten and Pisarski.
引用
收藏
页码：279 / 297
页数：19
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