论文标题
动力拐点通胀
Dynamical Inflection Point Inflation
论文作者
论文摘要
我们提供了一种基于Coleman-Weinberg电位的充气电位的多个拐点的机制。关键要素是存在充气量四分之一耦合β函数的零，可以简单地通过量规模型中的大量阈值量表的符号变化来实现。广泛的模型出现了通用的充气电位，并且可以在小场通货膨胀方案中适应实验数据。尽管预计张量与标量幅度的比率很小，但标量光谱指数（$α_s$）的运行均具有正值和负值的分支。 $α_s\ gtrsim 0.002 $的正分支将通过即将到来的宇宙微波背景实验测试。
We provide a mechanism to obtain multiple inflection points for the inflaton potential based on the Coleman-Weinberg potential. The key ingredient is the existence of zeros of the inflaton quartic coupling beta function, which can be simply realized by a sign change of a gauge coupling beta function at a massive threshold scale in gauge-Yukawa models. A universal inflaton potential emerges for a wide range of models and can accommodate the experimental data in the small-field inflation scenario. While the ratio of tensor over scalar amplitudes is predicted to be small, the running of the scalar spectral index, $α_s$, has branches with both positive and negative values. The positive branch with $α_s \gtrsim 0.002$ will be tested by the coming cosmic microwave background experiments.
