Cosmology from TGFT models of quantum gravity: basic ideas, relational observables and effective cosmological dynamics

par Daniele Oriti (LMU, München)

mercredi 9 mars 2022, 14:00 → 15:00 Europe/Paris

https://greenlight.virtualdata.cloud.math.cnrs.fr/b/fab-49u-gkt

I discuss the general motivating ideas about how cosmology could emerge from full quantum gravity in a TGFT formalism. In particular, I emphasize the use of discrete quantum geometric data, at the technical level, and the focus on relational observables for defining time evolution and spatial localization, at the conceptual level. I then summarize how these ideas have a concrete implementation in TGFT models with mixed local and non-local directions. In this context, I overview recent results on emerging bouncing cosmology at early times, phantom-like dark energy at late times and cosmological perturbations.