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QCD真空凝聚和参数化的夸克传播子
  • 期刊名称：原子核物理评论, 24(3)：175-182，2007
  • 时间：0
  • 分类：O572.33[理学—粒子物理与原子核物理;理学—物理]
  • 作者机构：[1]河池学院物理与电子工程系,广西宜州546300, [2]广西工学院强子物理与非微扰QCD研究组,广西柳州545006, [3]中国科学院高能物理研究所,北京100049
  • 相关基金：国家自然科学基金资助项目（10565001,10647002）;广西科技厅自然科学基金资助项目（0481030,0542042,0575020）
  • 相关项目：坡密子物理和非微扰QCD的研究
关键词： 整体色对称模型, 参数化的夸克传播子, 非微扰QCD真空和真空凝聚, global color symmetry model, parameterized quark propagator, nonperturbative QCD vacuum and vacuum condensate
中文摘要：

基于整体色对称模型,用完全穿衣服参数化的夸克传播子研究了量子色动力学（QCD）真空的性质,预言了各种表征QCD真空的凝聚值。其结果与其他唯象QCD理论模型的预言是一致的。结果清楚地表明了参数化的夸克传播子是成功和可靠的。讨论了计算QCD真空凝聚值时积分截断参数的问题,提出了一个避免计算的结果对截断参数强烈依赖的物理方法。

英文摘要：

Based on the Global Color Symmetry Model,the non-perturbative QCD vacuum is investigated by use of the parameterized fully dressed quark propagator.Our theoretical predictions for various quantities characterized the QCD vacuum are in agreement with those predicted by many other phenomenological QCD inspired models.The successful predictions clearly indicate the extensive validity of our parameterized quark propagator.A detailed discussion on the arbitrariness in determining the integration cut-off parameter of μ2 in calculating QCD vacuum condensates is given and a good method,which avoids the dependence of calculating results on the cut-off parameter,is also strongly recommended.

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