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Matter matters in asymptotically safe quantum gravity
- P. Donà, A. Eichhorn, R. Percacci
- Physics
- 12 November 2013
We investigate the compatibility of minimally coupled scalar, fermion and gauge fields with asymptotically safe quantum gravity, using nonperturbative functional Renormalization Group methods. We…
Viability of quantum-gravity induced ultraviolet completions for matter
- A. Eichhorn, A. Held
- Physics
- 5 May 2017
We highlight how the existence of an ultraviolet completion for interacting Standard-Model type matter puts constraints on the viable microscopic dynamics of asymptotically safe quantum gravity…
Asymptotic safety casts its shadow
- A. Held, R. Gold, A. Eichhorn
- PhysicsJournal of Cosmology and Astroparticle Physics
- 15 April 2019
We set out to bridge the gap between regular black-hole spacetimes and observations of a black-hole shadow by the Event Horizon Telescope. We explore modifications of spinning and non-spinning…
Continuum limit in matrix models for quantum gravity from the Functional Renormalization Group
- A. Eichhorn, T. Koslowski
- Physics
- 6 September 2013
We consider the double-scaling limit in matrix models for two-dimensional quantum gravity, and establish the nonperturbative functional Renormalization Group as a novel technique to compute the…
Impact of tropical Atlantic sea-surface temperature biases on the simulated atmospheric circulation and precipitation over the Atlantic region: An ECHAM6 model study
- A. Eichhorn, J. Bader
- Environmental ScienceClimate Dynamics
- 1 September 2017
As many coupled atmosphere-ocean general circulation models, the coupled Earth System Model developed at the Max Planck Institute for Meteorology suffers from severe sea-surface temperature (SST)…
Quantum-gravity-induced matter self-interactions in the asymptotic-safety scenario
- A. Eichhorn
- Physics
- 4 April 2012
We investigate the high-energy properties of matter theories coupled to quantum gravity. Specifically, we show that quantum gravity fluctuations generically induce matter self-interactions in a…
Probing the quantum nature of spacetime by diffusion
- G. Calcagni, A. Eichhorn, F. Saueressig
- Physics
- 26 April 2013
Many approaches to quantum gravity have resorted to diffusion processes to characterize the spectral properties of the resulting quantum spacetimes. We critically discuss these quantum-improved…
Towards phase transitions between discrete and continuum quantum spacetime from the Renormalization Group
- A. Eichhorn, T. Koslowski
- Physics
- 18 August 2014
We establish the functional Renormalization Group as an exploratory tool to investigate a possible phase transition between a pre-geometric discrete phase and a geometric continuum phase in quantum…
The nonperturbative functional renormalization group and its applications
- N. Dupuis, L. Canet, N. Wschebor
- Physics
- 8 June 2020
An Asymptotically Safe Guide to Quantum Gravity and Matter
- A. Eichhorn
- PhysicsFront. Astron. Space Sci.
- 17 October 2018
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…
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