Asymptotically safe gravity
arXiv:2003.00044
Abstract
This is an introduction to asymptotically safe quantum gravity, explaining the main idea of asymptotic safety and how it could solve the problem of predictivity in quantum gravity. In the first part, the concept of an asymptotically safe fixed point is discussed within the functional Renormalization Group framework for gravity, which is also briefly reviewed. A concise overview of key results on asymptotically safe gravity is followed by a short discussion of important open questions. The second part highlights how the interplay with matter provides observational consistency tests for all quantum-gravity models, followed by an overview of the state of results on asymptotic safety and its implications in gravity-matter models. Finally, effective asymptotic safety is briefly discussed as a scenario in which asymptotically safe gravity could be connected to other approaches to quantum gravity.
14 pages plus references, prepared for the proceedings of the 57th Course of the Erice International School of Subnuclear Physics, "In search for the unexpected", June 2019
References in corpus (5)
Cited by in corpus (10)
- The nonperturbative functional renormalization group and its applications
- A Short Review of Loop Quantum Gravity
- Light charged fermions in quantum gravity
- Exploring new corners of asymptotically safe unimodular quantum gravity
- Theoretical bounds on dark matter masses
- Phase transitions in tensorial group field theories: Landau-Ginzburg analysis of models with both local and non-local degrees of freedom
- Towards a Higgs mass determination in asymptotically safe gravity with a dark portal
- On the assumptions leading to the information loss paradox
- Novel Approaches to Renormalization Group Transformations in the Continuum and on the Lattice
- Introdução à Cosmologia Quântica