The QCD beta-function at O (1/N-f)

被引：88

作者：

Gracey, JA

机构：

[1] Dept. Appl. Math. and Theor. Phys., University of Liverpool, Liverpool L69 3BX

来源：

PHYSICS LETTERS B | 1996年 / 373卷 / 1-3期

关键词：

D O I：

10.1016/0370-2693(96)00105-0

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The leading order coefficients of the beta-function of QCD are computed in a large N-f expansion. They are in agreement with the three loop <(MS)over bar>calculation. The method involves computing the anomalous dimension of the operator (G(mu nu)(alpha))(2), at the d-dimensional fixed point in the non-abelian Thirring model to which QCD is equivalent in this limit. The effect the O(1/N-f) corrections have on the location of the infrared stable fixed point for a range of N-f is also examined.

引用

页码：178 / 184

页数：7

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