| 无序瞬子媒质中的两胶子凝聚 |
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| 引用本文： | 杨平雄,刘觉平.无序瞬子媒质中的两胶子凝聚[J].武汉大学学报(理学版),1995(1). |
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| 作者姓名： | 杨平雄 刘觉平 |
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| 作者单位： | 武汉大学物理学系 |
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| 摘 要： | 在量子色动力学（ＱＣＤ）瞬子真空模型中，研究了ＳＵｃ（２）、ＳＵｃ（３）规范场论中两胶子凝聚的温度依赖关系．用费曼变分原理和平均场近似方法，发现两胶子凝聚随温度升高而衰减，在Ｔ≈４．ＳＡｍｓ时，凝聚几乎消失；色磁凝聚和色电凝聚的干涉部分同非干涉部分相比，虽然比较小，但在低温区不可忽略．
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| 关 键 词： | 量子色动力学，瞬子媒质，两胶子凝聚 |
TWO-GLUON CONDENSATES IN THE INSTANTON MEDIUM OF A DISORDERED PHASE |
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| Yang Pingxiong,Liu Jueping.TWO-GLUON CONDENSATES IN THE INSTANTON MEDIUM OF A DISORDERED PHASE[J].JOurnal of Wuhan University:Natural Science Edition,1995(1). |
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| Authors: | Yang Pingxiong Liu Jueping |
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| Abstract: | We investigate the temperature dependence of the two-gluon condensates for the pure SUe(2),SUc(3) gauge field theories in the instanton model of the QCD vacuum. Using Feynman variational principle and mean-field approximation, the values of twogluon condensates are found to be decreasing with the temperature and vanishing at T sc 4. SAme for Nc = 3. Compared with their non-interference ones, the interference parts of both chromomagnetic and chromoelectric condensates are insignificant but cannot be neglected at thirlow temperatures. |
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| Keywords: | quantum chromodynamics instanton medium two-gluon condensates |
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