On two-color QCD with baryon chemical potential

被引：185

作者：

Kogut, JB

Stephanov, MA

Toublan, D

机构：

[1] Loomis Lab Phys, Urbana, IL 61801 USA

[2] SUNY Stony Brook, Inst Theoret Phys, Stony Brook, NY 11794 USA

[3] SUNY Stony Brook, Dept Phys, Stony Brook, NY 11794 USA

来源：

PHYSICS LETTERS B | 1999年 / 464卷 / 3-4期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/S0370-2693(99)00971-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We study SU(2) color QCD with even number of quark flavors. First, using QCD inequalities we show that at finite baryon chemical potential mu, condensation must occur in the channel with scalar diquark quantum numbers. This breaks the U(1) symmetry generated by baryon charge (baryon superconductivity). Then we derive the effective Lagrangian describing low lying meson and baryon excitations using extended local chiral symmetry of the theory, This enables us to determine the leading term in the dependence of the masses on mu exactly. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：183 / 191

页数：9

共 30 条

[1] QCD at finite baryon density: nucleon droplets and color superconductivity [J].