Factorization and non-factorization of in-medium four-quark condensates

被引：20

作者：

Leupold, S ^{[1
]}

机构：

[1] Univ Giessen, Inst Theoret Phys, D-35390 Giessen, Germany

来源：

PHYSICS LETTERS B | 2005年 / 616卷 / 3-4期

关键词：

QCD sum rules; large-N-c expansion; nuclear matter; finite-temperature field theory;

D O I：

10.1016/j.physletb.2005.04.046

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

It is well-established for the vacuum case that in the limit of a large number of colors N-c the four-quark condensates factorize into products of the two-quark condensate. It is shown that in the combined large-N-c and linear-density approximation four-quark condensates do not factorize in a medium of pions (finite-temperature system) but do factorize in a medium of nucleons (nuclear system). (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：203 / 207

页数：5

共 49 条

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