A NUMERICAL-METHOD TO COMPUTE THE RUNNING COUPLING IN ASYMPTOTICALLY FREE THEORIES

被引：277

作者：

LUSCHER, M

WEISZ, P

WOLFF, U

机构：

[1] MAX PLANCK INST PHYS & ASTROPHYS,W-8000 MUNICH 40,GERMANY

[2] CERN,DIV THEORY,CH-1211 GENEVA 23,SWITZERLAND

来源：

NUCLEAR PHYSICS B | 1991年 / 359卷 / 01期

关键词：

D O I：

10.1016/0550-3213(91)90298-C

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：

We propose to compute the running coupling gBAR2 in lattice gauge theories and non-linear sigma-models through a finite-size scaling analysis. The idea is shown to work well in the O(3) sigma-model, where we succeed to determine gBAR2 (in, say, a momentum subtraction scheme) at energies up to about 30 times the mass of the particles in the theory.

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页码：221 / 243

页数：23

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