Quantum Einstein gravity
Quantum Einstein gravity
复制标题
量子爱因斯坦引力
DOI：
10.1088/1367-2630/14/5/055022
复制
发表时间：
2012
影响因子：
3.3
通讯作者：
F. Saueressig
中科院分区：
文献类型：
--
作者：
M. Reuter;F. Saueressig
我们对量子爱因斯坦引力中的渐近安全程序的基本思想和概念进行了教学介绍。使用基于有效平均作用量的连续统方法，我们总结了该领域的最新进展，重点是支持在构造的核心处存在非平凡重整化群不动点的证据。作为应用，详细讨论了新兴时空的多重分形结构。特别地，我们将对它们光谱维度的连续谱预测与蒙特卡罗因果动力学三角剖分方法的数据进行了比较。
We give a pedagogical introduction to the basic ideas and concepts of the Asymptotic Safety program in quantum Einstein gravity. Using the continuum approach based upon the effective average action, we summarize the state of the art of the field with a focus on the evidence supporting the existence of the non-trivial renormalization group fixed point at the heart of the construction. As an application, the multifractal structure of the emerging space-times is discussed in detail. In particular, we compare the continuum prediction for their spectral dimension with Monte Carlo data from the causal dynamical triangulation approach.