On avoiding Ostrogradski instabilities within Asymptotic Safety

On avoiding Ostrogradski instabilities within Asymptotic Safety

Abstract We study the renormalization group flow of gravity coupled to scalar matter using functional renormalization group techniques. The novel feature is the inclusion of higher-derivative terms in the scalar propagator. Such terms give rise to Ostrogradski ghosts which signal an instability of t...

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Bibliographic Details
Main Authors: Daniel Becker, Chris Ripken, Frank Saueressig
Format: Article
Language:English
Published: SpringerOpen 2017-12-01
Series:Journal of High Energy Physics
Subjects:
Models of Quantum Gravity
Nonperturbative Effects
Renormalization Group
Online Access:http://link.springer.com/article/10.1007/JHEP12(2017)121

Internet

http://link.springer.com/article/10.1007/JHEP12(2017)121

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