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

Rafael-Robson-Lino-dos-Santos: From quantum gravity to gravitational waves through cosmic strings

Seminar Date:

I will talk about our latest paper whose abstract is: “New physics beyond the Standard Model can give rise to stochastic gravitational wave backgrounds, for example through cosmic strings. In this way, gravitational-wave searches with pulsar-timing arrays as well as existing and future laser interferometers may prov...

Diego Buccio: Amplitudes and Renormalization Group Techniques: A Case Study

Seminar Date:

We explore the properties of a simple renormalizable shift symmetric model with a higher deriva- tive kinetic energy and quartic derivative coupling, that can serve as a toy model for higher derivative theories of gravity. The scattering amplitude behaves as in a normal effective field theory below the threshold for...

Yannick Kluth: Spectral Functions of Gauge Theories with Banks-Zaks Fixed Point

Seminar Date:

In this talk, we investigate spectral functions of matter-gauge theories that are asymptotically free in the ultraviolet and display a Banks-Zaks conformal fixed point in the infrared. Using perturbation theory, Callan-Symanzik resummations, and UV-IR connecting renormalization group trajectories, we analytically de...

Andrzej Goerlich: Scalar fields in lattice quantum gravity

Seminar Date:

The Causal Dynamical Triangulations (CDT) model is a background-independent and diffeomorphism-invariant approach to quantum gravity that provides a lattice regularization of the formal gravitational path integral. The framework does not require a coordinate system, but uses only geometric invariants. We introduce c...

Arthur Ferreira Vieira: The fate of chiral symmetry in Riemann-Cartan geometry

Seminar Date:

We study the mechanism of chiral symmetry breaking for fermionic systems in a gravitational background with curvature and torsion. The analysis is based on a scale-dependent effective potential derived from a bosonized version of the Nambu-Jona-Lasino model in a Riemann-Cartan background. We have investigated the fa...

Jian Wang: Foliated asymptotically safe gravity in the fluctuation approach

Seminar Date:

The gravitational asymptotic safety program envisions a high-energy completion of gravity based on a non-Gaussian renormalization group fixed point. A key step in this program is the transition from Euclidean to Lorentzian signature spacetimes. One way to address this challenge is to formulate the quantum theory bas...

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 an Associate Professor at CP3-Origins, University of Southern Denmark, Villum Young Investigator and Perimeter Institute Visiting Fellow. She works on building connections in quantum gravity: connections between quantum-gravity approaches, connections between fundamental theory and phenomenology, and connections between neighboring research communities. more

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Aaron Held

Aaron works on phenomenological constraints in quantum and classical effective field theories of gravity. Currently, DAAD Prime Fellow at Jena University and The Princeton Gravity Initiative.

Marc Schiffer

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