Quantum Gravity and Cosmology: an intimate interplay

[摘要] I will briefly discuss three cosmological models built upon three distinct quantum gravity proposals. I will first highlight the cosmological rôle 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.

[发布机构] Theoretical Particle Physics and Cosmology Group, Department of Physics, King's College London, University of London, Strand, London; WC2R 2LS, United Kingdom^1

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Accelerated expansion;Cosmological modeling;Cosmological models;Gravitational model;Non-commutative;Quantum gravity;The standard model;Vector fields