AI 中文总结
该研究开发了首个从暴胀时代到当代宇宙结构的全宇宙历史从头算模拟，应用于轴子-U(1)暴胀，揭示早期宇宙相互作用对小尺度结构的影响，为探测暴胀物理提供新途径。
AI 中文摘要
宇宙网保留了塑造宇宙最早时刻的物理记录，这个时期是被称为宇宙暴胀的指数膨胀阶段。然而，如果暴胀涉及显著的非线性相互作用，就不会有关于由此产生的宇宙网的直接理论预测。我们提出了首个模拟宇宙整个历史的研究，从暴胀时代深处到当代宇宙结构。将该模拟应用于轴子-U(1)暴胀，我们发现早期宇宙相互作用会增强高红移处的小尺度结构，在物质功率谱和暗物质晕质量函数上留下修改后的原初曲率功率谱与非高斯性的特征。这些特征使高红移星系巡天、21厘米观测和线强度映射成为探测暴胀物理的有前景工具。更广泛地说，这种从头算方法提供了一个新颖框架，可将非线性暴胀动力学的特征映射到整个宇宙时间中可观测的宇宙结构上。
英文摘要
The cosmic web preserves a record of the physics that shaped the universe in its earliest moments, the period of exponential expansion known as cosmic inflation. However, if inflation involves significant nonlinear interactions, there are no direct theoretical predictions for the resulting cosmic web. We present the first simulation of the entire history of the universe, from deep in the inflationary epoch to the present-day cosmic structure. Applying this to axion-U(1) inflation, we find that early-universe interactions enhance small-scale structure at high redshift, imprinting the matter power spectrum and the mass function of dark matter halos with signatures of a modified primordial curvature power spectrum and non-Gaussianity. These signatures make high-redshift galaxy surveys, 21-cm observations, and line-intensity mapping promising probes of inflationary physics. More broadly, this ab initio approach provides a novel framework for mapping the signatures of nonlinear inflationary dynamics onto observable cosmic structures across cosmic time.
Comments10 pages, 4 figures
