Group Field Theory Condensate Cosmology: An Appetizer

Universe

Mairi Sakellariadou¹  AndreasG. A. Pithis¹ 

[1] Department of Physics, King’s College London, University of London, Strand, London WC2R 2LS, UK;

关键词: quantum geometry;    quantum gravity;    quantum cosmology;    group field theory;    loop quantum gravity;   

DOI  :  10.3390/universe5060147

来源: DOAJ

【 摘 要 】

This contribution is an appetizer to the relatively young and fast-evolving approach to quantum cosmology based on group field theory condensate states. We summarize the main assumptions and pillars of this approach which has revealed new perspectives on the long-standing question of how to recover the continuum from discrete geometric building blocks. Among others, we give a snapshot of recent work on isotropic cosmological solutions exhibiting an accelerated expansion, a bounce where anisotropies are shown to be under control, and inhomogeneities with an approximately scale-invariant power spectrum. Finally, we point to open issues in the condensate cosmology approach.

【 授权许可】

Unknown