论文标题
通过重力效应
Electroweak Vacuum Stability and the Higgs Field Relaxation via Gravitational Effects
论文作者
论文摘要
标准模型（SM）参数的测量值有利于浅的亚稳态电动（EW）真空，周围是深度全局广告或最小失控的Minkowski。此外，微调是希格斯在当前最低限度中放松的唯一解释。在本文中，假设除SM之外没有新物理学，我们研究了重力对早期宇宙中希格斯动态的普遍影响。考虑到一个通用的两参数模型，其中希格斯非最低限度耦合与更高曲率的重力理论。爱因斯坦框架中希格斯场与韦伊尔场之间的耦合具有真实的预测。在参数空间中的一个宽区域中，有效的希格斯质量很大，最初通过快速振荡接管。该时期之后是Weyl场慢慢滚动的高原样电势。该框架通常预测，与SM预测相比，通过与重力部门的耦合，EW真空中的HIGGS自耦合得到了增强。此外，当希格斯定居在EW真空中时，所有其他标量平坦的方向都将通过Weyl场介导的重力效应来提升。
The measured values of the Standard Model (SM) parameters favors a shallow metastable electroweak (EW) vacuum surrounded by a deep global AdS or a runaway Minkowski minimum. Furthermore, fine-tuning is the only explanation for the Higgs relaxing in its present local minimum. In this paper, assuming no new physics beyond the SM, we study the universal effect of gravity on the Higgs dynamics in the early universe. A generic two-parameter model is considered in which the Higgs is non-minimally coupled to a higher-curvature theory of gravity. The coupling between the Higgs field and the Weyl field in the Einstein frame has genuine predictions. In a broad region in the parameter space, the effective Higgs mass is large and it initially takes over through fast oscillations. This epoch is followed by the Weyl field slowly rolling a plateau-like potential. This framework generically predicts that the Higgs self-coupling in the EW vacuum is enhanced, compared to the SM predictions, through couplings to the gravity sector. Moreover, when the Higgs is settled in the EW vacuum, all other scalar flat directions would be lifted via gravitational effects mediated by the Weyl field.
