Gauge invariance and background field formalism in the exact renormalisation group

被引：92

作者：

Freire, F ^{[1
]}

Litim, DF

Pawlowski, JM

机构：

[1] NUI, Dept Math Phys, Maynooth, Kildare, Ireland

[2] Dublin Inst Adv Studies, Sch Theoret Phys, Dublin 4, Ireland

[3] Inst Theoret Phys, D-69120 Heidelberg, Germany

来源：

PHYSICS LETTERS B | 2000年 / 495卷 / 1-2期

关键词：

D O I：

10.1016/S0370-2693(00)01231-4

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We discuss gauge symmetry and Ward-Takahashi identities for Wilsonian flows in pure Yang-Mills theories. The background field formalism is used for the construction of a gauge invariant effective action. The symmetries of the effective action under gauge transformations for both the gauge field and the auxiliary background field are separately evaluated. We examine how the symmetry properties of the full theory are restored in the limit where the cut-off is removed. (C) 2000 Elsevier Science B.V. All rights reserved.

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页码：256 / 262

页数：7

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