Research

Exploring the interplay of classical general relativity and the quantum world dictating particle physics is a fascinating area of research. In particular, the question whether gravity can be formulated as a consistent and predictive quantum field theory still comes with many conceptual and computational challenges. Moreover, we just start with understanding the possible phenomenological consequences entailed by such a construction. In order to obtain a better understanding of these questions we bring together elements from quantum gravity, quantum field theory in curved spacetime, , non-perturbative aspects of quantum field theory, black hole physics, and cosmology.

Concrete research lines currently pursued in my group include:

fundamental questions related to the gravitational asymptotic safety program.
questions linked to formulating quantum gravity in Lorentzian signature spacetime.
phenomenological consequences of the asymptotic safety mechanism for particle physics.
quantum corrections to black hole spacetimes and their phenomenology.
imprints of quantum gravity in cosmology.
relations between various quantum gravity programs.

On the technical side our group develops novel

renormalization group methods applicable to gravity, gravity-matter systems, and their discrete counterparts.
machine-learning based methods for solving renormalization group equations more efficiently.
methods for solving equations of motion including higher-derivative terms.

Frank Saueressig

Research