4D Geometry Generated by Combinatorially Non-local Field Theory
Basic data for this talk
Type of talk: scientific talk
Name der Vortragenden: Thürigen, Johannes
Date of talk: 10/07/2023
Talk language: English
URL of slides: https://indico.imapp.ru.nl/event/106/contributions/489/
Information about the event
Name of the event: Quantum Gravity 2023
Event period: 10/07/2023 - 14/07/2023
Event location: Nijmegen
Event website: https://indico.imapp.ru.nl/event/106/
Organised by: International Society for Quantum Gravity
Abstract
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.Keywords: Quantum Field Theory; Discrete Geometry; Spectral Dimesion; Quantum Gravity
Speakers from the University of Münster
| Thürigen, Johannes | Professur für Reine Mathematik (Prof. Wulkenhaar) |