ON THE VANISHING OF EVANESCENT OPERATORS

被引：137

作者：

DUGAN, MJ

GRINSTEIN, B

机构：

[1] Lyman Laboratory of Physics, Harvard University, Cambridge

来源：

PHYSICS LETTERS B | 1991年 / 256卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0370-2693(91)90680-O

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

In dimensional regularization, any four-fermion operator mixes with an infinite number of other four-fermion operators. All but a finite number of these formally vanish when the number of space-time dimensions, d, is taken to be d = 4. It is not obvious that the matrix elements of these so-called "evanescent" operators vanish beyond tree level. We show that one can choose a renormalization scheme such that this is indeed the case. Nevertheless, there are physical effects produced by these operators.

引用

页码：239 / 244

页数：6

共 7 条

[1]

BOLLINI CG, 1975, 5 BRAZ S THEOR PHYS, V1, P335

[2] DIMENSIONAL RENORMALIZATION AND ACTION PRINCIPLE [J].