An Asymptotically Safe Guide to Quantum Gravity and Matter

Asymptotic safety generalizes asymptotic freedom and could contribute to understanding physics beyond the Standard Model. It is a candidate scenario to provide an ultraviolet extension for the effective quantum field theory of gravity through an interacting fixed point of the Renormalization Group....

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Bibliographic Details
Published inFrontiers in astronomy and space sciences Vol. 5
Main Author Eichhorn, Astrid
Format Journal Article
LanguageEnglish
Published Frontiers Media S.A 22.01.2019
Subjects
asymptotic safety
beyond standard model
gauge theories
quantum gravity
renormalization group
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Summary:Asymptotic safety generalizes asymptotic freedom and could contribute to understanding physics beyond the Standard Model. It is a candidate scenario to provide an ultraviolet extension for the effective quantum field theory of gravity through an interacting fixed point of the Renormalization Group. Recently, asymptotic safety has been established in specific gauge-Yukawa models in four dimensions in perturbation theory, providing a starting point for asymptotically safe model building. Moreover, an asymptotically safe fixed point might even be induced in the Standard Model under the impact of quantum fluctuations of gravity in the vicinity of the Planck scale. This review contains an overview of the key concepts of asymptotic safety, its application to matter and gravity models, exploring potential phenomenological implications and highlighting open questions.
ISSN:2296-987X
2296-987X
DOI:10.3389/fspas.2018.00047