Expanding on [1], we analyze in detail the single field chaotic inflationary models plus a cosine modulation term, augmented by a light scalar field with inflaton dependent oscillatory mass term. We work out in detail the Feynman diagrams and compute one, two and in general estimate higher loop two and three point functions in the in-in formulation. We explicitly establish how the oscillatory mass term can amplify one-loop effects to dominate over the tree as well as the higher loop contributions. The power spectrum of curvature perturbations of this model is hence enhanced compared to the simple single field chaotic model. As a consequence, one can suppress the tensor to scalar ratio r and have a different expression for scalar spectral tilt and the running of the tilt, opening the way to reconcile chaotic models with convex potential and the Planck data. As in monodromy inflation models, we also have a cosine modulation in the spectral tilt. We also analyze the bispectrum, which can be dominated by the amplified one-loop effects, yielding a new shape in non-Gassuianty. We discuss the bounds on parameter space from all available CMB observables and possible implications for reheating.

中文翻译：

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天空中可观察到的量子环路效应

扩展 [1]，我们详细分析了单场混沌暴胀模型加上余弦调制项，并通过具有暴胀子相关振荡质量项的轻标量场增强。我们详细地计算出费曼图并计算一、二和一般估计在 in-in 公式中更高的循环二和三点函数。我们明确地建立了振荡质量项如何放大单环效应以支配树以及更高的环贡献。因此，与简单的单场混沌模型相比，该模型的曲率扰动的功率谱得到了增强。因此，可以抑制张量与标量比 r 并且对标量谱倾斜和倾斜的运行有不同的表达，为调和具有凸势的混沌模型和普朗克数据开辟了道路。与单一膨胀模型一样，我们在光谱倾斜中也有余弦调制。我们还分析了双谱，它可以被放大的单环效应所支配，在非加斯瓦蒂中产生一种新的形状。我们讨论了所有可用 CMB 观测值的参数空间界限以及对再加热的可能影响。