论文标题
有和没有观众场的多chaotic通胀
Multi-chaotic inflation with and without spectator field
论文作者
论文摘要
在最近发布的Planck+Bicep/Keck的结果中，我们根据光谱指数$ N_S $和张量表与标准比率$ r $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ r $调查了多场通货膨胀模型的一致性。在这项研究中，我们专注于有和没有观众场的双重融合模型。我们发现，当三个具有特定层次质量光谱的字段实现以使两个字段充当充气，而另一个是观众，则具有二次电势的充气可能会变得可行。我们还通过仔细研究预测如何取决于通气场空间中的背景轨迹，讨论避免微调的条件。
Motivated by the result of Planck+BICEP/Keck recently released, we investigate the consistency of the multi-field inflation models in terms of the spectral index $n_s$ and the tensor-to-scalar ratio $r$. In this study, we focus on double-inflaton models with and without a spectator field. We find that inflaton with a quadratic potential can become viable when three fields with a specific hierarchical mass spectrum are realized such that two fields act as inflatons and the other one is the spectator. We also discuss the conditions to avoid the fine-tuning, by careful study of how the prediction depends on the background trajectory in the inflaton-field space.
