Quantum Gravity and Cosmology: an intimate interplay

8th International Workshop DICE2016: Spacetime - Matter - Quantum Mechanics

物理学;力学

Sakellariadou, Mairi^1

Theoretical Particle Physics and Cosmology Group, Department of Physics, King's College London, University of London, Strand, London

WC2R 2LS, United Kingdom^1

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

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/880/1/012003/pdf
DOI  :  10.1088/1742-6596/880/1/012003

学科分类：力学，机械学

来源: IOP

【 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.