Four-quark condensates in nucleon QCD sum rules

被引：47
作者：
Thomas, R.
Hilger, T.
Kaempfer, B.
机构：
[1] Dresden Rossendorf, Forschungszentrum, D-01314 Dresden, Germany
[2] Tech Univ Dresden, Inst Theoret Phys, D-01062 Dresden, Germany
来源：
NUCLEAR PHYSICS A | 2007年 / 795卷
关键词：
D O I：
10.1016/j.nuclphysa.2007.08.012
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：
The in-medium behavior of the nucleon spectral density including self-energies is revisited within the framework of QCD sum rules. Special emphasis is given to the density dependence of four-quark condensates. A complete catalog of four-quark condensates is presented and relations among them are derived. Generic differences of such four-quark condensates occurring in QCD sum rules for light baryons and light vector mesons are discussed. (c) 2007 Elsevier B.V. All rights reserved.
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页码：19 / 46
页数：28
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