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Updated: Mar 7, 2026
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Setting Limits on Supersymmetry Using Simplified Models
Published on: November 15, 2013
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The Asymptotic Safety Scenario in Quantum Gravity.
Max Niedermaier1, Martin Reuter2
1Laboratoire de Mathematiques et Physique Theorique, CNRS/UMR 6083, Université de Tours, Parc de Grandmont, 37200 Tours, France.
Living Reviews in Relativity
|February 10, 2017
Summary
The asymptotic safety scenario offers a renormalizable quantum gravity theory, reconciling safe couplings with unitarity. Evidence from symmetry truncations and effective action flows supports this, suggesting a self-consistent background geometry.
Area of Science:
- Quantum Gravity
- Renormalizable Quantum Field Theory
Background:
- The asymptotic safety scenario proposes a viable quantum theory of gravity.
- Reconciling asymptotically safe couplings with unitarity is a key challenge.
Purpose of the Study:
- To review the evidence for the asymptotic safety scenario in quantum gravity.
- To present criteria for a continuum limit and self-consistent background geometry.
Main Methods:
- Utilizing symmetry truncations and the truncated flow of the effective average action.
- Employing the background effective action as the central object.
- Formulating criteria for a continuum limit.
Main Results:
- Evidence from symmetry truncations and effective action flows supports asymptotic safety.
- A dimensional reduction phenomenon links ultraviolet residual interactions.
- A self-consistent background geometry determined by quantum dynamics is presented.
Conclusions:
- The asymptotic safety scenario provides a potential framework for a renormalizable quantum theory of gravity.
- The findings support the feasibility of reconciling asymptotic safety with unitarity and a quantum-determined geometry.
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