PROBING THE SUPERSYMMETRIC O(N) SIGMA MODEL TO O(1/N2) - CRITICAL EXPONENT NU

被引：25

作者：

GRACEY, JA

机构：

[1] Research Institute for Theoretical Physics, University of Helsinki, SF-00170 Helsinki

来源：

NUCLEAR PHYSICS B | 1991年 / 352卷 / 01期

关键词：

D O I：

10.1016/0550-3213(91)90134-J

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 present a detailed evaluation of the critical exponent-nu at O(1/N2) in the supersymmetric-sigma model on S(N), which shows that the coefficients of the perturbative beta-function at four and higher loop are purely transcendental numbers. Consequently, the anomalous dimension, gamma(g), is given to the same large-N approximation.

引用

页码：183 / 213

页数：31

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