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arXiv 2206.00519hep-ph
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QCD预加热:重子产生的新前沿

QCD preheating: New frontier of baryogenesis

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

AI总结:

本文提出QCD预加热机制,指出过冷QCD相变中真空的瞬时非平衡动力学可产生物质丰度,并在与新物理耦合时解释宇宙重子不对称性。

摘要:

我们发现,QCD可以在QCD相变期间通过非平衡过程产生宇宙学物质丰度,这就是我们所说的QCD预加热,其中以夸克凝聚为特征的QCD真空的动力学转变瞬时发生。当宇宙经历后续的过冷QCD转变时,该机制便会起作用。我们还发现,如果存在与QCD相通的新物理,QCD预加热可以用于产生宇宙的重子不对称性。这些是QCD相变时期前后热历史的新图景,因此QCD真空的动力学层面开辟了探索低尺度物质产生(如重子产生)的新前沿。探究QCD再加热时代也将有助于深入理解宇宙热历史中的亚原子尺度物理。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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