论文标题
用爆炸结束通货膨胀：higgs真空衰减$ r^2 $重力
Ending inflation with a bang: Higgs vacuum decay in $R^2$ gravity
论文作者
论文摘要
根据当前的实验数据，Higgs真空似乎是由于其潜力较低的较低地面状态而产生的。因此，真空衰减会诱导真正的真空气泡对我们的宇宙产生灾难性后果的成核，因此我们有动力研究早期宇宙中可能的稳定机制。在我们的最新研究（2207.00696）中，我们在Starobinsky通货膨胀的观察模型中研究了Electroweak的稳定性。遵循我们的第一项研究（2011.037633）的动机和技术，我们获得了HIGGS曲率耦合$ξ$的限制，同时将SM嵌入了修改后的重力方案$ R+R^2 $，这会自然引入Starobinsky膨胀。这对有效的Higgs潜力产生了重大影响，其额外的负术语破坏了虚假真空的稳定性。另一个重要方面在于通货膨胀结束的定义，因为气泡成核在其最后时刻最为突出。我们的结果表明，这些较强的较低$ξ$结合物对通货膨胀的最后时刻非常敏感，因为时空偏离了De Sitter。
According to the current experimental data, the Higgs vacuum appears to be metastable due to the development of a second lower ground state in its potential. Consequently, vacuum decay would induce the nucleation of true vacuum bubbles with catastrophic consequences for our Universe and therefore we are motivated to study possible stabilising mechanisms in the early universe. In our latest investigation (2207.00696), we studied the electroweak metastability in the context of the observationally favoured model of Starobinsky inflation. Following the motivation and techniques from our first study (2011.037633), we obtained constraints on the Higgs curvature coupling $ξ$, while embedding the SM on the modified gravity scenario $R+R^2$, which introduces Starobinsky inflation naturally. This had significant repercussions for the effective Higgs potential in the form of additional negative terms that destabilize the false vacuum. Another important aspect lay in the definition for the end of inflation, as bubble nucleation is most prominent during its very last moments. Our results dictated that these stronger lower $ξ$-bounds are very sensitive to the final moments of inflation, where spacetime deviates increasingly from de Sitter.
