论文标题
在QCD中限制的类似轴突的机制
An axion-like mechanism for confinement in QCD
论文作者
论文摘要
这封信是关于QCD中的限制。目前，我们有限制的图片，以完成对强烈相互作用粒子物理学的理解，这是要求限制的相互作用。正如[1]中所说：“原则上应该从QCD Lagrangian中得出限制假设。目前，不存在严格的推导，因此尚不清楚限制假设是QCD的骨fide的预测。在这封信中，我们表明（当然不是必需的）限制条件是真空的拓扑结构与$θ$ -Vacuum不符。因此，如果无法通过隧道连接具有非平凡绕组数的不同真空吸尘器，则因此获得了限制。此外，我们表明，类似轴的机制足以描述一个密闭的QCD相。
This letter is about confinement in QCD. At the moment we have pictures of confinement to complete our understanding of the physics of strongly interacting particles, interaction which asks for confinement. As it is said in [1] : " In principle it should be possible to derive the confinement hypothesis from the QCD Lagrangian. At this time, no rigorous derivation exists, so it is not absolutely clear that the confinement hypothesis is a bone fide prediction of QCD". In this letter we show that a sufficient (of course not necessary) condition for confinement is that topological structure of vacuum in Nature does not correspond to the $θ$-vacuum. Therefore, if different vacua with nontrivial winding number cannot be connected by tunneling, we obtain confinement as a consequence. Moreover, we show that an axion-like mechanism would suffice to describe a confined QCD phase.
