论文标题
雪人质量2021白皮书：量子重力的观察性特征
Snowmass 2021 White Paper: Observational Signatures of Quantum Gravity
论文作者
论文摘要
这项简短的综述旨在作为2021年雪地过程的座谈级摘要，涉及有关量子重力中红外可观察物的最新理论结果。我们依靠简单的物理论证，最著名的是一个随机的步行直觉，以说明紫外线中量子重力的影响如何（在Planck长度$ \ ell_p \左右10^{ - 35} \ mbox {mbox {m} $）可能会在大型测量长度的长度尺度$ l $中纳入可观察的大量测量长度。灯表层上的量子不确定性会导致大小$Δl^2 \ simeq \ ell_p l/4π$的累积效应。我们讨论了从更正式的计算中，例如从AD/CFT中脱颖而出，从真空能量波动产生的多个重力冲击波以及对液体的有效描述中，来自多个引力冲击引起的Einstein-Hilbert作用的尺寸降低到Dilaton Gravity。我们概述了使用许多用于引力波观测站开发的工具，使用简单的Michelson干涉仪来测量这种效果。
This short review is intended as a colloquium-level summary, for the Snowmass 2021 process, on recent theoretical results on infrared observables in quantum gravity. We rely on simple physical arguments, most notably a random walk intuition, to show how effects of quantum gravity in the ultraviolet (at the Planck length $\ell_p \approx 10^{-35} \mbox{ m}$) may integrate into the infrared when the large measurement length scale $L$ enters into the observable. A quantum uncertainty at lightsheet horizons would give rise to an accumulated effect of size $δL^2 \simeq \ell_p L/4 π$. We discuss how the random walk intuition falls out from more formal calculations, such as from AdS/CFT, from the dimensional reduction of the Einstein-Hilbert action to dilaton gravity, from multiple gravitational shockwaves generated by vacuum energy fluctuations, as well as from an effective description of gravity as a fluid. We overview experimental prospects for measuring this effect with a simple Michelson interferometer utilizing many of the tools developed for gravitational wave observatories.
