论文标题
重新审视的Higgs-Dilaton模型：Dilaton可以充当QCD轴吗？
Higgs-dilaton model revisited: can dilaton act as QCD axion?
论文作者
论文摘要
标准模型Lagrangian在高能极限中具有近似的比例对称性。该观察结果可以包括在自然最终理论的基本原理中，作为确切量表不变性的要求。在此设置中，所有低能粒子现象学都是由于比例对称性的自发破坏，导致存在额外的无质量标量场 - DILATON。我们探讨了该领域能够以与QCD轴模型相似的方式求解QCD中强的CP问题的情况。 DILATON扮演轴轴的作用，与QCD部门耦合，并因尺度对称性的非扰动破裂而获得质量项。我们表明，低尺度通货膨胀后，Dilaton可以形成暗物质。作为概念证明，我们构建了一个基因驱动通货膨胀的模型，始终实现与CMB数据兼容的类似轴突的Dilaton暗物质生产。
The Standard Model Lagrangian has an approximate scale symmetry in the high-energy limit. This observation can be included in the fundamental principle of the ultimate theory of Nature as the requirement of the exact quantum scale invariance. In this setup, all low-energy particle phenomenology can be obtained as a result of the spontaneous breaking of scale symmetry leading to the presence of the extra massless scalar field -- the dilaton. We explore the scenario in which this field is capable of solving the strong CP-problem in QCD in a similar way as in QCD axion models. The dilaton, playing the role of the axion, is coupled to the QCD sector and acquires a mass term due to non-perturbative breaking of scale symmetry. We show that the dilaton can form dark matter after the low-scale inflation. As a proof of concept, we construct a model of Higgs-driven inflation consistently realising the axion-like dilaton dark matter production compatible with the CMB data.
