MEDIUM EFFECTS IN THE NAMBU-JONA-LASINIO MODEL

被引：22

作者：

HENLEY, EM ^{[1
]}

MUTHER, H ^{[1
]}

机构：

[1] UNIV TUBINGEN,INST THEORET PHYS,W-7400 TUBINGEN 1,GERMANY

来源：

NUCLEAR PHYSICS A | 1990年 / 513卷 / 3-4期

关键词：

D O I：

10.1016/0375-9474(90)90404-A

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：

Several extensions and applications of the Nambu-Jona-Lasinio (NJL) model for an SU(2) symmetric theory are considered. First, we examine the effect of binding or confinement on the theory by means of a simple, naive, model. Second, we consider the particle-hole response function for scalar, pseudoscalar and vector excitations in the Bethe-Salpeter approximation. From the imaginary part of the response function we can deduce the masses of the corresponding mesons (σ, π, ω) and their coupling to the qq̄ excitations of the vacuum as well as to excitations of a quark medium. © 1990.

引用

页码：667 / 684

页数：18

共 24 条

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