Wilsonian flows and background fields

被引：81
作者：
Litim, DF [1 ]
Pawlowski, JM
机构：
[1] CERN, Div Theory, CH-1211 Geneva 23, Switzerland
[2] Univ Erlangen Nurnberg, Inst Theoret Phys 3, D-91054 Erlangen, Germany
来源：
PHYSICS LETTERS B | 2002年 / 546卷 / 3-4期
关键词：
D O I：
10.1016/S0370-2693(02)02693-X
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study exact renormalization group flows for background field dependent regularizations. It is shown that proper-time flows are approximations to exact background field flows for a specific class of regulators. We clarify the role of the implicit scale dependence introduced by the background field. Its impact on the flow is evaluated numerically for scalar theories at criticality for different approximations and regularizations. Implications for gauge theories are discussed. (C) 2002 Published by Elsevier Science B.V.
引用
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页码：279 / 286
页数：8
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