论文标题
多场宇宙学中的多点相关器
Multipoint correlators in multifield cosmology
论文作者
论文摘要
在适当的运动学和耦合方面，量子场理论中连接的$ n $ - 点幅度通过$ n！$增强，但是对撞机物理应用程序的非扰动分析是微妙的。我们为宇宙学通货膨胀中宇宙学的扰动的$ n $点相关功能解决了这个问题，并评论了其对原始非高斯性的应用。我们发现它们是使用简单的模型来计算的$ n！$ - 用于混合现场扇区的模型，从而导致其概率分布的卷积。这种效果导致模型依赖但有趣的前景，以增强观察敏感性。
Connected $N$-point amplitudes in quantum field theory are enhanced by a factor of $N!$ in appropriate regimes of kinematics and couplings, but the non-perturbative analysis of this for collider physics applications is subtle. We resolve this question for $N$-point correlation functions of cosmological perturbations in multifield inflation, and comment on its application to primordial non-Gaussianity. We find that they are calculably $N!$-enhanced using a simple model for the mixing of the field sectors which leads to a convolution of their probability distributions. This effect leads to model-dependent but interesting prospects for enhanced observational sensitivity.
