论文标题
引导一环通胀相关因子与光谱分解
Bootstrapping One-Loop Inflation Correlators with the Spectral Decomposition
论文作者
论文摘要
近年来，宇宙撞机物理学的现象学研究确定了许多1循环通胀相关因子是发现通货膨胀量表周围或高于通货膨胀量表周围大量新颗粒的领先渠道。但是，目前无法使用这些巨大的1循环相关器的完整分析结果。在这项工作中，我们启动了一个以1循环顺序进行大规模交换的自举通货膨胀相关器的程序，并输入了树级通胀相关器和DS中光谱分解的技术。作为第一步，我们首次提出了一类4点和3点通胀相关因子的完整和分析结果，该相关因子是由1环阶的大规模标量场介导的。使用完整的结果，我们为信号和挤压限制中的信号和背景提供简单可靠的分析近似值。我们还确定了标量三光谱的配置，其中循环的振荡信号在背景上占主导地位。
Phenomenological studies of cosmological collider physics in recent years have identified many 1-loop inflation correlators as leading channels for discovering heavy new particles around or above the inflation scale. However, complete analytical results for these massive 1-loop correlators are currently unavailable. In this work, we embark on a program of bootstrapping inflation correlators with massive exchanges at 1-loop order, with the input of tree-level inflation correlators and the techniques of spectral decomposition in dS. As a first step, we present for the first time the complete and analytical results for a class of 4-point and 3-point inflation correlators mediated by massive scalar fields at the 1-loop order. Using the full result, we provide simple and reliable analytical approximations for the signals and the background in the squeezed limit. We also identify configurations of the scalar trispectrum where the oscillatory signal from the loop is dominant over the background.
