论文标题

QCD预热:重生的新领域

QCD preheating: New frontier of baryogenesis

论文作者

Wang, Xin-Ru, Li, Jin-Yang, Enomoto, Seishi, Ishida, Hiroyuki, Matsuzaki, Shinya

论文摘要

我们发现,QCD可以在QCD相变期间通过不平衡过程创造宇宙学的丰度,这就是我们所说的QCD预热,在这种情况下,QCD真空的动态过渡以夸克冷凝物为特征。当宇宙经历后续过冷的QCD过渡时,该机制起作用。我们还发现,如果与QCD传达了新的物理学,则QCD预热可以创建宇宙的重子不对称。这些是QCD相过渡时期周围热历史的新图片,因此QCD真空的动态方面为探索低规模物质产生(例如男性生成)打开了新的边界。追求QCD再加热时代也将有助于深入了解宇宙热史上的亚原子尺度物理学。

We find that QCD can create the cosmological matter abundance via out-of-equilibrium processes during the QCD phase transition, that is what we call the QCD preheating, where the dynamic transition of the QCD vacuum characterized by the quark condensate takes place instantaneously. This mechanism works when the Universe undergoes subsequent supercooled QCD transition. We also find that the QCD preheating can work to create the baryon asymmetry of the Universe if there is the new physics communicated with QCD. These are new pictures of the thermal history around the QCD-phase transition epoch, and thus the dynamic aspect of the QCD vacuum opens a new frontier to explore low-scale matter generation such as baryogenesis. Pursuing the QCD reheating era would also help deeply understanding the subatomic-scale physics in the thermal history of the Universe.

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