论文标题
宇宙撞机信号中的阶段信息
Phase Information in Cosmological Collider Signals
论文作者
论文摘要
在宇宙膨胀期间产生的巨大颗粒可以使原始非高斯的原始粒子成为各种动量比率的特征振荡功能，称为宇宙撞机信号。我们启动了可以明确定义和测量的振荡信号阶段的研究。该相可以提供有关单独从信号频率和角度依赖性获得的中间重颗粒的自旋和耦合的有用的新信息。我们还提出了来自两个典型的1循环过程的完整非局部信号的新分析结果，从而可以精确地确定信号相远离挤压极限。
Massive particles produced during the cosmic inflation can imprint in the primordial non-Gaussianities as characteristic oscillating functions of various momentum ratios, known as cosmological collider signals. We initiate a study of the phase of the oscillating signals which can be unambiguously defined and measured. The phase can provide useful new information about the spin and the couplings of the intermediate heavy particles that cannot be obtained from the signal frequency and angular dependences alone. We also present new analytical results for full nonlocal signals from two typical 1-loop processes, enabling precise determination of the signal phase away from the squeezed limit.
