INSTANTONS IN CUTOFF THEORIES

被引：5

作者：

BRANCHINA, V ^{[1
]}

POLONYI, J ^{[1
]}

机构：

[1] CTR RECH NUCL, F-67037 STRASBOURG, FRANCE

来源：

NUCLEAR PHYSICS B | 1995年 / 433卷 / 01期

关键词：

D O I：

10.1016/0550-3213(94)00367-N

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：

It is shown that the inhomogeneous saddle points of scale invariant theories make the semiclassical expansion sensitive to the choice of non-renormalizable operators. In particular, the instanton fugacity and the beta function of the two-dimensional non-linear sigma-model depend on apparently non-renormalizable operators. This represents a non-perturbative breakdown of that concept of universality which is based on low dimensional operators.

引用

页码：99 / 122

页数：24

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