The international seminar on asymptotic safety was founded in spring 2011, with the intention of bringing the asymptotic-safety community together, and providing a platform for talks on asymptotic safety in and beyond quantum gravity, as well as related topics in quantum gravity and quantum field theory.

Upcoming seminars

Carlos Pastor Marcos: Cosmology from asymptotically safe Proca theories


Seminar Date:

Effective field theories for cosmology offer a powerful framework to investigate the dynamics of space–time and address longstanding open puzzles. In this work, we initiate a programme to analyse the ultraviolet completion of vector–tensor quantum field theories within the asymptotic safety paradigm, focusing on gen...

Alfio Bonnano: Quantum Gravity Constraints on Fifth Forces


Seminar Date:

We investigate how ultraviolet (UV) completion in quantum gravity constrains possible fifth forces. In scalar–tensor theories, the radial mode of a broken O(N) scalar sector mediates a Yukawa correction to Newtonian gravity, characterized by a strength \alpha_Y and a range \lambda_Y. Using functional renormalization...

Muxin Han: Ultraviolet Fixed Point in Covariant Loop Quantum Gravity


Seminar Date:

We investigate the ultraviolet behavior of 4-dimensional Lorentzian covariant Loop Quantum Gravity (LQG) and address the problem of infinite ambiguities relating to the triangulation dependence of spinfoam amplitudes. We consider the complete LQG amplitude that summing spinfoam amplitudes over 2-complexes. By introd...

The organizers

If you are interested in attending the seminars and joining the community, please contact Aaron Held or Marc Schiffer to join the corresponding mailing list.

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Astrid Eichhorn

Astrid is Professor in Theoretical Physics at Heidelberg University. She works on quantum gravity and its phenomenology in particle physics, black holes and cosmology.

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Aaron Held

Aaron works on phenomenological constraints in quantum and classical effective field theories of gravity. Currently, Philippe Meyer Junior Research Chair at Ecole Normale Superieure in Paris.

Marc Schiffer

Marc works on asymptotically safe gravity-matter systems using functional and lattice methods. Currently, Postdoctoral researcher at Radboud University.