标题： 渐近安全量子引力中的尺度和层次：一项回顾 显示英文标题

标题： Scales and hierachies in asymptotically safe quantum gravity: a review

摘要： 渐近安全性计划致力于提供一个一致的引力描述，将其作为非微扰可重正化的量子场论。在此框架下，引力相互作用被编码在一个重正化群流中，该流连接了超越普朗克尺度的量子引力区域与可观测的低能物理。我们的过程回顾了这一构造预测能力背后的关键要素，并总结了确定其自由参数的最新状态。明确构建描述我们世界的现实重正化群轨迹显示，流动态地生成了两个尺度：牛顿耦合变为常数的普朗克尺度和宇宙学常数冻结的地球尺度。我们还回顾了通过宇宙学观测确定理论自由参数的可能性。 显示英文摘要

摘要： The asymptotic safety program strives for a consistent description of gravity as a non-perturbatively renormalizable quantum field theory. In this framework the gravitational interactions are encoded in a renormalization group flow connecting the quantum gravity regime at trans-Planckian scales to observable low-energy physics. Our proceedings reviews the key elements underlying the predictive power of the construction and summarizes the state-of-the-art in determining its free parameters. The explicit construction of a realistic renormalization group trajectory describing our world shows that the flow dynamically generates two scales: the Planck scale where Newton's coupling becomes constant and a terrestrial scale where the cosmological constant freezes out. We also review the perspectives of determining the free parameters of the theory through cosmological observations.