From the 1 of 11 linked papers with an AI index.
11 papers
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 vs (hidden) physical symmetries of FLRW cosmologies
Andrea Calcinari, Adrià Delhom, Federico Greco +2
The paper analyses how gauge symmetries and hidden physical symmetries differ in flat FLRW cosmologies with multiple massless scalar fields, showing that conformal Killing vectors…
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…
Visions in Quantum Gravity
Luca Buoninfante, Benjamin Knorr, K. Sravan Kumar +36
To deepen our understanding of Quantum Gravity and its connections with black holes and cosmology, building a common language and exchanging ideas across different approaches is cr…
The CosmoVerse White Paper: Addressing observational tensions in cosmology with systematics and fundamental physics
Eleonora Di Valentino, Jackson Levi Said, Adam Riess +533
The standard model of cosmology has provided a good phenomenological description of a wide range of observations both at astrophysical and cosmological scales for several decades.…