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

被引：99
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.
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页码：357 / 360
页数：4
相关论文
共 9 条
[1]   CHIRALITY SELECTION-RULES AND U(1) PROBLEM [J].
CREWTHER, RJ .
PHYSICS LETTERS B, 1977, 70 (03) :349-354
[2]  
CREWTHER RJ, 1978, TH2546 CERN PREPR
[3]   A-1-N EXPANDABLE SERIES OF NONLINEAR SIGMA-MODELS WITH INSTANTONS [J].
DADDA, A ;
LUSCHER, M ;
DIVECCHIA, P .
NUCLEAR PHYSICS B, 1978, 146 (01) :63-76
[4]  
DADDA A, 1978, DESY7875 PREPR
[5]   HOW QUARK CONFINEMENT SOLVES ETA -] 3-PI PROBLEM [J].
KOGUT, J ;
SUSSKIND, L .
PHYSICAL REVIEW D, 1975, 11 (12) :3594-3610
[6]  
VENEZIANO G, 1979, TH2651 CERN PREPR
[7]   U(1) PROBLEM [J].
WEINBERG, S .
PHYSICAL REVIEW D, 1975, 11 (12) :3583-3593
[8]   INSTANTONS, THE QUARK-MODEL, AND THE 1-N EXPANSION [J].
WITTEN, E .
NUCLEAR PHYSICS B, 1979, 149 (02) :285-320
[9]  
WITTEN E, 1979, HARVARD U PREPRINT
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