THE CRITICAL O(N) SIGMA-MODEL AT DIMENSION 2-LESS-THAN-D-LESS-THAN-4 AND ORDER 1/N(2) - OPERATOR PRODUCT EXPANSIONS AND RENORMALIZATION

被引：54

作者：

LANG, K

RUHL, W

机构：

[1] Fachbereich Physik, Universität Kaiserslautern, Kaiserslautern

来源：

NUCLEAR PHYSICS B | 1992年 / 377卷 / 1-2期

关键词：

D O I：

10.1016/0550-3213(92)90028-A

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：

A 1/N-expansion at [1/N2] is applied to the four-point function of O(N) vector fields. Conformal integrals for graphs are calculated. The necessary renormalizations are performed with different methods appropriate to each case. We compare the result with operator product expansions.

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页码：371 / 401

页数：31

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