Jul 10 – 14, 2023
Radboud University Nijmegen
Europe/Amsterdam timezone

A Phase of 4-dimensional Geometry Generated by Combinatorially Non-local Field Theory

Jul 10, 2023, 4:30 PM
CC3 (Radboud University)


Radboud University

Mercatorpad 1 Nijmegen


Johannes Thürigen (University of Münster)


Recovering the observed four-dimensional spacetime is a major challenge and distinguishing criterion for any quantum theory of gravity based on fundamentally discrete structures. Tensor models seem to generate random geometries, but only two-dimensional or fractal ones. I will show here how adding geometric degrees of freedom in the spirit of group field theory enables to overcome this obstacle. Examples of four-dimensional random geometries in such field theories open up the possibility that group-field quantum gravity entails a semiclassical regime of continuum spacetime in agreement with observations.

Presentation materials