Four-derivative Interactions in Asymptotically Safe Gravity

Journal Article · Tue Dec 15 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3284399· OSTI ID:21371381

Benedetti, Dario ^[1]; Machado, Pedro F ^[2]; Saueressig, Frank ^[3]

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1. Perimeter Institute for Theoretical Physics 31 Caroline St. N, N2L 2Y5, Waterloo ON (Canada)
2. Institute for Theoretical Physics and Spinoza Institute Utrecht University, 3508 TD Utrecht (Netherlands)
3. Institute of Physics, University of Mainz Staudingerweg 7, D-55099 Mainz Germany (Germany)

We summarize recent progress in understanding the role of higher-derivative terms in the asymptotic safety scenario of gravity. Extending previous computations based on the functional renormalization group approach by including a Weyl-squared term in the ansatz for the effective action, further evidence for the existence of a non-Gaussian fixed point is found. The fixed point also persists upon including a minimally coupled free scalar field, providing an explicit example of perturbative counterterms being non-hazardous for asymptotic safety.

• OSTI ID: 21371381
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1196; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ACTION INTEGRAL
ASYMPTOTIC SOLUTIONS
CALCULATION METHODS
EQUATIONS
FIELD THEORIES
GRAVITATION
INTEGRAL EQUATIONS
INTEGRALS
MATHEMATICAL SOLUTIONS
QUANTUM FIELD THEORY
QUANTUM GRAVITY
RENORMALIZATION
SCALAR FIELDS