A NONLOCAL, COVARIANT GENERALIZATION OF THE NJL MODEL

被引：149

作者：

BOWLER, RD

BIRSE, MC

机构：

[1] Theoretical Physics Group, Department of Physics and Astronomy, The University of Manchester, Manchester

来源：

NUCLEAR PHYSICS A | 1995年 / 582卷 / 3-4期

基金：

英国工程与自然科学研究理事会;

关键词：

D O I：

10.1016/0375-9474(94)00481-2

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

We solve a nonlocal generalisation of the NJL model in the Hartree approximation. This model has a separable interaction, as suggested by instanton models of the QCD vacuum. The choice of form factor in this interaction is motivated by the confining nature of the vacuum. A conserved axial current is constructed in the chiral limit of the model and the pion properties are shown to satisfy the Gell-Mann-Oakes-Renner relation. For reasonable values of the parameters the model exhibits quark confinement.

引用

页码：655 / 664

页数：10

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