论文标题
QCD真空和巴里昂群众
QCD vacuum and baryon masses
论文作者
论文摘要
为了研究量子染色体动力学（QCD）真空在核和强子物理学中的可能作用，我们评估了QCD真空候选者的物理数量。在这项研究中，我们采用了QCD真空的哥本哈根（意大利面条）图片，并在组成夸克模型中计算地面巴里昂质量。我们发现，计算出的Baryon质量确实取决于表征QCD真空的哥本哈根图片的参数，并满足Baryon Octet的Gell-Mann-Okubo质量关系。我们还观察到，本研究中定义的有效组成夸克质量包含归因于哥本哈根真空的贡献，即Gluon背景场。然后，我们通过使用baryon质量作为输入来估计背景gluon场的值是向上（下）组成夸克质量的函数。
To study a possible role of the quantum chromodynamics (QCD) vacuum in nuclear and hadron physics, we evaluate a physical quantity in a candidate of the QCD vacuum. In this study we adopt the Copenhagen (spaghetti) picture of the QCD vacuum and calculate the ground-state baryon masses in a constituent quark model. We find that the calculated baryon mass does depend on a parameter that characterizes the Copenhagen picture of the QCD vacuum and satisfies the Gell-Mann-Okubo mass relation for the baryon octet. We also observe that the effective constituent quark mass defined in this study contains a contribution attributed to the Copenhagen vacuum, that is the gluon background field. We then estimate the value of the background gluon field as a function of the up (down) constituent quark mass by using the baryon masses as inputs.
