Group field theory condensate cosmology: An appetizer

TY - JOUR

T1 - Group field theory condensate cosmology

T2 - An appetizer

AU - Pithis, Andreas G.A.

AU - Sakellariadou, Mairi

PY - 2019/6/13

Y1 - 2019/6/13

N2 - 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.

AB - 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.

KW - Group field theory

KW - Loop quantum gravity

KW - Quantum cosmology

KW - Quantum geometry

KW - Quantum gravity

UR - http://www.scopus.com/inward/record.url?scp=85067671846&partnerID=8YFLogxK

U2 - 10.3390/universe5060147

DO - 10.3390/universe5060147

M3 - Review article

AN - SCOPUS:85067671846

SN - 2218-1997

VL - 5

JO - Universe

JF - Universe

IS - 6

M1 - 147

ER -