Cosmological phase transition of spontaneous confinement
Cosmological phase transition of spontaneous confinement
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DOI：
10.1007/jhep05(2020)086
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发表时间：
2019-10
影响因子：
5.4
通讯作者：
K. Agashe;P. Du;Majid Ekhterachian;Soubhik Kumar;R. Sundrum
中科院分区：
文献类型：
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作者：
K. Agashe;P. Du;Majid Ekhterachian;Soubhik Kumar;R. Sundrum
在近共形不变场论中研究了宇宙学（去）禁闭相变的动力学，其中禁闭主要是自发产生的，并与光场相关联。我们展示了如何领导的过渡率的贡献，可以计算内的有效理论。在复合希格斯理论的背景下，我们证明了一个简单的方案，涉及两个重整化群不动点可以使过渡进行得更快，比在最小的情况下，从而避免过渡前产生的物质丰度的过度稀释。引力波现象的影响进行了讨论。一般来说，我们发现更多（更少）快速相变与较弱（较强）的引力波信号有关。这里讨论的强耦合复合希格斯相变的各种可能的特征可以具体地建模在弱耦合内的AdS/CFT双Randall-Sundrum额外的维描述，这提供了重要的见解过渡的性质及其理论控制。这些方面将在一份配套文件中介绍。
The dynamics of a cosmological (de) confinement phase transition is studied in nearly conformally invariant field theories, where confinement is predominantly spontaneously generated and associated with a light “dilaton” field. We show how the leading contribution to the transition rate can be computed within the dilaton effective theory. In the context of Composite Higgs theories, we demonstrate that a simple scenario involving two renormalization-group fixed points can make the transition proceed much more rapidly than in the minimal scenario, thereby avoiding excessive dilution of matter abundances generated before the transition. The implications for gravitational wave phenomenology are discussed. In general, we find that more (less) rapid phase transitions are associated with weaker (stronger) gravitational wave signals. The various possible features of the strongly coupled composite Higgs phase transition discussed here can be concretely modeled at weak coupling within the AdS/CFT dual Randall-Sundrum extra-dimensional description, which offers important insights into the nature of the transition and its theoretical control. These aspects will be presented in a companion paper.