SPONTANEOUS BREAKING OF FLAVOR SYMMETRY AND PARITY IN THE NAMBU JONA-LASINIO MODEL WITH WILSON FERMIONS

被引：15

作者：

AOKI, S ^{[1
]}

BOETTCHER, S ^{[1
]}

GOCKSCH, A ^{[1
]}

机构：

[1] BROOKHAVEN NATL LAB,DEPT PHYS,UPTON,NY 11973

来源：

PHYSICS LETTERS B | 1994年 / 331卷 / 1-2期

关键词：

D O I：

10.1016/0370-2693(94)90957-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study the lattice Nambu-Jona-Lasinio model with two flavors of Wilson fermions in the large N limit, where N is the number of ''colors''. For large values of the four-fermion coupling we find a phase in which both, flavor symmetry and parity, are spontaneously broken. In accordance with general expectations there are three massless pions on the phase boundary, but only two of them remain massless inside the broken phase. This is analogous to earlier results obtained in lattice QCD, indicating that this behavior is a very general feature of the Wilson term.

引用

页码：157 / 164

页数：8

共 18 条

[1] NUMERICAL EVIDENCE FOR A PARITY-VIOLATING PHASE IN LATTICE QCD WITH WILSON FERMIONS [J].