THE CLASSICALLY PERFECT FIXED-POINT ACTION FOR SU(3) GAUGE-THEORY

被引：107

作者：

DEGRAND, T ^{[1
]}

HASENFRATZ, A ^{[1
]}

HASENFRATZ, P ^{[1
]}

NIEDERMAYER, F ^{[1
]}

机构：

[1] UNIV BERN, INST THEORET PHYS, CH-3012 BERN, SWITZERLAND

来源：

NUCLEAR PHYSICS B | 1995年 / 454卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0550-3213(95)00458-5

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：

In this paper (the first of a series) we describe the construction of fixed-point actions for lattice SU(3) pure gauge theory. Fixed-point actions have scale-invariant instanton solutions and the spectrum of their quadratic part is exact (they are classical perfect actions). We argue that the fixed-point action is even one-loop quantum perfect, i.e. in its physical predictions there are no g(2)a(n) cut-off effects for any n. We discuss the construction of fixed-point operators and present examples. The lowest-order <q(q)over bar> potential V(r) obtained from the fixed-point Polyakov loop correlator is free of any cut-off effects which go to zero as an inverse power of the distance r.

引用

页码：587 / 614

页数：28

共 33 条

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