Asymptotic safety of gravity-matter systems

By Jan Meibohm, Jan M. Pawlowski, M. Reichert. 2015

145 citations recorded by the source corpus.

We study the ultraviolet stability of gravity-matter systems for general numbers of minimally coupled scalars and fermions. This is done within the functional renormalisation group setup put forward in \cite{Christiansen:2015rva} for pure gravity. It includes full dynamical propagators and a genuine dynamical Newton's coupling, which is extracted from the graviton three-point function. We find ultraviolet stability of general gravity-fermion systems. Gravity-scalar systems are also found to be ultraviolet stable within validity bounds for the chosen generic class of regulators, based on the size of the anomalous dimension. Remarkably, the ultraviolet fixed points for the dynamical couplings are found to be significantly different from those of their associated background counterparts, once matter fields are included. In summary, the asymptotic safety scenario does not put constraints on the matter content of the theory within the validity bounds for the chosen generic class of regulators.

Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/8700f9a07d0e913a26ddc353d9666674ce78e889

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In Astronomy and Astrophysics

1. A. Eichhorn
2. L. Canet
3. W. Metzner
4. N. Dupuis
5. Jan M. Pawlowski
6. M. Tissier
7. N. Wschebor

In Nuclear and High Energy Physics

1. A. Eichhorn
2. W. Metzner
3. M. Tissier
4. N. Dupuis
5. N. Wschebor
6. L. Canet
7. Jan M. Pawlowski
8. Markus Q. Huber

Citations in the corpus

• The nonperturbative functional renormalization group and its applications (2020, background): “been studied in various truncations in [1114, 1116, 1182, 1277–1282], some of which go beyond minimal coupling.”