论文标题
量子重力：波动的观点
Quantum gravity: a fluctuating point of view
论文作者
论文摘要
在这项贡献中，我们通过功能性重态化组方法讨论了量子重力的渐近安全方案，该方法将动态度量波动与背景度量标准释放。我们在纯重力和一般重力系统系统中回顾了艺术的状态。这包括对渐近安全紫外线固定点的存在和特性的讨论，红外线具有经典重力的完整紫外线轨迹以及在重力构成系统中耦合的曲率依赖性。重力 - 摩托系统系统的结果涉及固定点的紫外线稳定性以及最小耦合重力 - 物质系统中重力波动的优势。此外，我们讨论了重要的物理特性，例如理论的局部性，差异不变性，背景独立性，单位性和对可观察物的访问以及开放的挑战。
In this contribution, we discuss the asymptotic safety scenario for quantum gravity with a functional renormalisation group approach that disentangles dynamical metric fluctuations from the background metric. We review the state of the art in pure gravity and general gravity-matter systems. This includes the discussion of results on the existence and properties of the asymptotically safe ultraviolet fixed point, full ultraviolet-infrared trajectories with classical gravity in the infrared, and the curvature dependence of couplings also in gravity-matter systems. The results in gravity-matter systems concern the ultraviolet stability of the fixed point and the dominance of gravity fluctuations in minimally coupled gravity-matter systems. Furthermore, we discuss important physics properties such as locality of the theory, diffeomorphism invariance, background independence, unitarity, and access to observables, as well as open challenges.
