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arXiv 2609.07829hep-thgr-qc

渐近安全量子引力的微分同胚不变方法

Diffeomorphism-invariant Approach to Asymptotically Safe Quantum Gravity

Friederike Ihssen, Benjamin Knorr, Silas Mezger, Jan M. Pawlowski, Paul P. Sprenger

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中文总结 AI 辅助

提出一种基于物理信息重正化群流的微分同胚不变方法,用于渐近安全度规量子引力,确保每步不变性并维持算符相关性计数,首次显式不变地计算罗伊特不动点并评估误差。

中文摘要 AI 辅助

我们提出了一种新颖的微分同胚不变的渐近安全度规量子引力方法。该方法基于物理信息重正化群流,其重正化群核保证了每一步重正化群变换的微分同胚不变性。重要的是,它还使我们能够控制并维持度规量子引力中算符的相关性计数。由此得到的有效作用是量子微分同胚不变且背景无关的。作为首个非平凡应用,我们以显式微分同胚不变的方式计算了罗伊特不动点。该计算辅以对正则化依赖性的详细讨论以及对近似误差的系统估计。

英文摘要

We provide a novel diffeomorphism-invariant approach to asymptotically safe metric quantum gravity. It is based on physics-informed renormalisation group flows with a renormalisation group kernel that guarantees diffeomorphism invariance at each renormalisation group step. Importantly, it also allows us to control and maintain the relevance counting of operators in metric quantum gravity. The resulting effective action is quantum diffeomorphism-invariant and background-independent. As a first non-trivial application, we compute the Reuter fixed point in a manifestly diffeomorphism-invariant way. This computation is augmented with a detailed discussion of regularisation dependence and a systematic estimate of the errors arising from approximations.

发表机构

  • Ruhr-Universität Bochum(波鸿鲁尔大学)
  • Universität Heidelberg(海德堡大学)
  • Karlsruhe Institute of Technology(卡尔斯鲁厄理工学院)
  • GSI(德国重离子研究中心)

机构由 AI 辅助整理,请以论文原文为准。

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