核子作为玻色子的束缚态
Nucleon viewed as a Borromean Bound-State
摘要：
我们解释了动力学手征对称性破缺的涌现现象如何确保连续量子场论中三价夸克散射问题的庞加莱协变分析产生一幅核子作为博罗米恩束缚态的图像，其中束缚主要通过两个单独贡献的总和产生。一个涉及的方面的非阿贝尔字符的量子色动力学表示在强运行的耦合，并产生紧密的，动态的颜色-反夸克的相关性的标量，等压线和pseudovector-isottriplet渠道。这种吸引力被与双夸克分裂和重组相关的夸克交换放大，这是为了确保每个价夸克在其量子数允许的范围内参与所有双夸克关联所必需的。结合这些效应，我们得到一个适当反对称的Faddeev波函数的核子和计算，例如，味道分离版本的狄拉克和泡利形状因子和质子的领先扭转部分子分布振幅。我们的结论是，现有的数据和计划的实验是能够验证所提出的图片。
英文摘要：
We explain how the emergent phenomenon of dynamical chiral symmetry breaking ensures that Poincaré covariant analyses of the three valence-quark scattering problem in continuum quantum field theory yield a picture of the nucleon as a Borromean bound-state, in which binding arises primarily through the sum of two separate contributions. One involves aspects of the non-Abelian character of Quantum Chromodynamics that are expressed in the strong running coupling and generate tight, dynamical color-antitriplet quark-quark correlations in the scalar-isoscalar and pseudovector-isotriplet channels. This attraction is magnified by quark exchange associated with diquark breakup and reformation, which is required in order to ensure that each valence-quark participates in all diquark correlations to the complete extent allowed by its quantum numbers. Combining these effects, we arrive at a properly antisymmetrised Faddeev wave function for the nucleon and calculate, e.g. the flavor-separated versions of the Dirac and Pauli form factors and the proton's leading-twist parton distribution amplitude. We conclude that available data and planned experiments are capable of validating the proposed picture.
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