299 citations · 5.4k across the 147 of their papers we have counts for
153 papers
Dynamical dark energy from quantum gravity condensates
Daniele Granata, Daniele Oriti
We investigate dynamical dark energy emerging from quantum gravity within the framework of group field theory (GFT) condensate cosmology. We generalise previous models of quantum g…
Emergent dark sector in group field theory cosmology
Andrea Calcinari, Federico Greco, Daniele Oriti +1
We develop an analytical treatment of the emergent cosmological dynamics induced by local polynomial interactions in a deparametrised group field theory model, moving beyond the us…
Emergent scalar field dynamics in a cosmological spacetime from GFT quantum gravity
Roukaya Dekhil, Federico Greco, Stefano Liberati +1
We derive an effective scalar field theory for matter in group field theory condensate cosmology, starting from the fundamental quantum-gravity dynamics in a fully relational frame…
Gauge versus (hidden) physical symmetries of FLRW cosmologies
Andrea Calcinari, Adrià Delhom, Federico Greco +2
In generally covariant theories, evolution in coordinate time is a gauge transformation, so that a symmetry made manifest in a gauge-fixed description need not be a symmetry of the…
Collective excitations in quantum gravity condensates
Andrea Calcinari, Adrià Delhom, Daniele Oriti
A central open problem in quantum gravity is to understand how continuum spacetime emerges from quantum-geometric degrees of freedom in a background-independent setting. A many-bod…
Cosmic Acceleration from Quantum Gravity: Emergent Inflation and Dynamical Dark Energy
Luca Marchetti, Tom R. Ladstätter, Daniele Oriti
We present a mechanism for the emergence of cosmic acceleration within the mean-field approximation of Group Field Theory models of quantum gravity. Depending on the interaction ty…