EFFECTIVE LAGRANGIAN WITH NO U(1) PROBLEM IN CPN-1 MODELS AND QCD

被引：98

作者：

DIVECCHIA, P

机构：

[1] CERN, Geneva

来源：

PHYSICS LETTERS B | 1979年 / 85卷 / 04期

关键词：

D O I：

10.1016/0370-2693(79)91271-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We write an effective lagrangian which gives two-point Green's functions satisfying the anomalous Ward identities for the U(1) axial vector current with a singlet particle that has a non-vanishing mass in the chiral limit. We show that the mechanism that has been postulated by Witten and Veneziano for solving the U(1) problem in the framework of the 1/n expansion in QCD is fully active in the two-dimensional CPn- model where the 1/n expansion can be explicitly performed. © 1979.

引用

页码：357 / 360

页数：4

共 9 条

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[8] INSTANTONS, THE QUARK-MODEL, AND THE 1-N EXPANSION
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[J]. NUCLEAR PHYSICS B, 1979, 149 (02) : 285 - 320
[9] WITTEN E, 1979, HARVARD U PREPRINT

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