Four-derivative interactions in asymptotically safe gravity
High Energy Physics - Theory
2015-05-14 v1
Abstract
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.
Cite
@article{arxiv.0909.3265,
title = {Four-derivative interactions in asymptotically safe gravity},
author = {Dario Benedetti and Pedro F. Machado and Frank Saueressig},
journal= {arXiv preprint arXiv:0909.3265},
year = {2015}
}
Comments
8 pages, 1 figure; to appear in the Proceedings of the XXV Max Born Symposium "The Planck Scale", Wroclaw, 29 June - 3 July, 2009