Quantum Gravity and Cosmology: an intimate interplay
arXiv:1703.09498 · doi:10.1088/1742-6596/880/1/012003
Abstract
I will briefly discuss three cosmological models built upon three distinct quantum gravity proposals. I will first highlight the cosmological role of a vector field in the framework of a string/brane cosmological model. I will then present the resolution of the big bang singularity and the occurrence of an early era of accelerated expansion of a geometric origin, in the framework of group field theory condensate cosmology. I will then summarise results from an extended gravitational model based on non-commutative spectral geometry, a model that offers a purely geometric explanation for the standard model of particle physics.
16 pages, invited talk at DICE2016 (Castiglioncello, Italy, Sept 12-16); to appear in the proceedings
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