TL;DR
This paper reviews the concept of asymptotic safety, a condition ensuring quantum field theories remain consistent at high energies, with a focus on evidence supporting an asymptotically safe quantum gravity theory.
Contribution
It provides an overview of asymptotic safety and reviews current evidence supporting its application to quantum gravity.
Findings
Evidence suggests the existence of a nontrivial fixed point for gravity.
Asymptotic safety could make quantum gravity consistent at all energy scales.
The approach offers a promising framework for quantum field theories of gravity.
Abstract
Asymptotic safety is a set of conditions, based on the existence of a nontrivial fixed point for the renormalization group flow, which would make a quantum field theory consistent up to arbitrarily high energies. After introducing the basic ideas of this approach, I review the present evidence in favor of an asymptotically safe quantum field theory of gravity.
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Taxonomy
TopicsQuantum Mechanics and Applications · Cosmology and Gravitation Theories · Relativity and Gravitational Theory