Department of Physics and Astronomy, University of California, Irvine, California 92697-4575, USA.
Phys Rev Lett. 2019 Mar 22;122(11):112001. doi: 10.1103/PhysRevLett.122.112001.
If the strong coupling is promoted to a dynamical field-dependent quantity, it is possible that the strong force looked very different in the early Universe. We consider a scenario in which the dynamics is such that QCD confines at high temperatures with a large dynamical scale, relaxing back to ∼1 GeV before big bang nucleosynthesis. We discuss the cosmological implications and explore potential applications, including fleshing out a new mechanism for baryogenesis which opens up if QCD confines before the electroweak phase transition of the standard model.
如果强耦合被提升为一个动态的、依赖于场的量，那么在早期宇宙中，强力可能看起来非常不同。我们考虑了一种情况，其中动力学使得在高温下 QCD 以大的动力学标度禁闭，然后在大爆炸核合成之前松弛回到 ∼1 GeV。我们讨论了宇宙学的含义，并探索了潜在的应用，包括为标准模型的电弱相变之前发生 QCD 禁闭的情况下打开的新的重子生成机制提供了具体内容。
