论文标题
高原通货膨胀的初始条件：案例研究
Initial conditions for plateau inflation: a case study
论文作者
论文摘要
我们研究了充气电势具有平稳形状的情况下通货膨胀的初始条件。这样的模型是普朗克数据最受青睐的模型，可以在大量模型类中获得。作为一个代表性的例子，我们认为在Palatini Gravity的背景下，Higgs通货膨胀有或没有$ R^2 $。我们表明，即使通货膨胀的规模和通货膨胀量比Planck量表小得多，也没有任何参数的通货膨胀率在参数空间的很大一部分，而没有任何微调参数。我们讨论了检测原始引力波和曲率扰动的光谱倾斜的后果，以及最近提出的“跨普兰克审查制度”的猜想。
We study initial conditions for inflation in scenarios where the inflaton potential has a plateau shape. Such models are those most favored by Planck data and can be obtained in a large number of model classes. As a representative example, we consider Higgs inflation with and without an $R^2$ term in the context of Palatini gravity. We show that inflation with a large number of e-folds generically occurs in a large part of the parameter space without any fine-tuning of parameters even when the scale of inflation and the inflaton field value during inflation are much smaller than the Planck scale. We discuss consequences for detection of primordial gravitational waves and spectral tilt of curvature perturbations, as well as the recently proposed "Trans-Planckian Censorship" conjecture.
