论文标题
QCD和通用Yang-Mills理论与物质表示
Confinement in QCD and generic Yang-Mills theories with matter representations
论文作者
论文摘要
我们得出了量子染色体动力学（QCD）的低能极限，并提供了证据表明，在“ hoft hooft限制”中，即对于大量的颜色和增加了hooft耦合，恢复了夸克限制。该理论的低能量极限被证明是一种非本地Nambu-Jona-Lasinio（NJL）模型。非局部性的影响是由Gluon繁殖物非常适合激发液液体的特征，是在耦合随着较低的动量而增加，从而产生从手性冷凝物到激体液体的相变。这种相跃迁足以将夸克传播器的极点移至复杂平面。结果，自由夸克在理论的范围内不再是物理状态。
We derive the low-energy limit of quantum chromodynamics (QCD) and provide evidence that in the 't Hooft limit, i.e. for a very large number of colors and increasing 't Hooft coupling, quark confinement is recovered. The low energy limit of the theory turns out to be a non-local Nambu-Jona-Lasinio (NJL) model. The effect of non-locality, arising from a gluon propagator that fits quite well to the profile of an instanton liquid, is to produce a phase transition from a chiral condensate to an instanton liquid, as the coupling increases with lower momentum. This phase transition suffices to move the poles of the quark propagator to the complex plane. As a consequence, free quarks are no longer physical states in the spectrum of the theory.
