量子模拟器产生的暴胀双谱与红外物理
Inflationary Bispectra and IR Physics from Quantum Simulators
AI总结：
本文将玻色-爱因斯坦凝聚体用作量子模拟器，计算相互作用理论的主导项，发现周期性驱动标度因子的共振关联函数易探测，可用于研究德西特空间无质量标量场的晚期红外发散。
AI中文摘要：
玻色-爱因斯坦凝聚体已被成功用作量子模拟器，用于研究早期宇宙的粒子产生。本文将这一类比扩展到相互作用理论，为此计算了一般实验装置中决定三点关联的主导相互作用项，将其应用于宇宙学中受启发的膨胀模型宇宙，也应用于周期性振荡的模型宇宙。由于实验对可实现的标度因子存在限制，膨胀标度因子未必能产生易于观测的信号，而周期性驱动的标度因子会产生随时间线性增长的共振关联函数，非常适合实验探测。该分析的一项直接应用是研究德西特空间中无质量标量场背景下常被讨论的晚期红外发散的实验研究。
英文摘要：
Bose-Einstein condensates have been used successfully as quantum simulators for early-universe particle production. Here we extend this analogy to the interacting theory. To this end, we compute the leading interaction terms expected in a general experimental setup that determine the 3-point correlations. We apply them to cosmologically motivated expanding model universes, but also periodically oscillating ones. While expanding scale factors do not necessarily lead to easily observable signatures due to experimental constraints on the realizable scale factor, periodically driven ones produce resonant correlators that grow linearly over time and lend themselves well to experimental detection. One direct application of this analysis is the experimental study of late-time infrared divergencies often discussed in the context of massless scalars in de Sitter space.
