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arXiv 1206.1797hep-ph
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非微扰QCD真空中的夸克虚度分布

Quark Virtuality Distribution in Non-perturbative QCD Vacuum

Zhou Li-juan, Ma Wei-xing, Leonard S. Kisslinger

摘要:

我们引入夸克虚性分布[ $λ^{2}_{q}(x)$ ]作为夸克虚性的一种扩展,它是用非定域而不是定域的夸克真空凝聚来表示的.结果表明,随着$x$的增加,夸克虚度分布从有限值逐渐减小到零。这清楚地表明夸克被限制在强子内部,而当$x$接近零时,夸克具有有限的虚性,这表明夸克在QCD中的渐近自由。这些预言不仅对研究QCD真空态的性质和非微扰QCD问题有重要意义,而且对研究宇宙学常数问题也有重要意义,我们已经指出,在QCD的Ghost理论中,应该用非定域夸克真空凝聚来处理这个问题.

英文摘要:

We introduce the quark virtuality distribution [$λ^{2}_{q}(x)$] as an extenson of the quark virtuality by using nonlocal rather than local quark vacuum condensates. Our results show that the quark virtuality distribution decreases gradually from a finite value to zero as $x$ increases. This clearly indicates that quarks are confined inside hadrons, whereas, as $x$ approaches zero quarks have a finite virtuality, which shows asymptotic freedom of quarks in QCD. The present predictions are important not only for studying the properties of QCD vacuum states, and non-perturbative QCD problems, but also for study of the cosmological constant problem, which we have shown should be treated using nonlocal quark vacuum condensate in the Ghost theory of QCD.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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