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Emergence of a low spin phase in group field theory condensates (2016)
Journal Article
Gielen, S. (2016). Emergence of a low spin phase in group field theory condensates. Classical and Quantum Gravity, 33(22), Article 224002. https://doi.org/10.1088/0264-9381/33/22/224002

Recent results have shown how quantum cosmology models can be derived from the effective dynamics of condensate states in group field theory (GFT), where ‘cosmology is the hydrodynamics of quantum gravity’: the classical Friedmann dynamics for homoge... Read More about Emergence of a low spin phase in group field theory condensates.

Quantum cosmology from group field theory condensates: a review (2016)
Journal Article
Gielen, S., & Sindoni, L. (2016). Quantum cosmology from group field theory condensates: a review. Symmetry, Integrability and Geometry: Methods and Applications, 12, doi:10.3842/sigma.2016.082

We give, in some detail, a critical overview over recent work towards deriving a cosmological phenomenology from the fundamental quantum dynamics of group field theory (GFT), based on the picture of a macroscopic universe as a “condensate” of a large... Read More about Quantum cosmology from group field theory condensates: a review.

Perfect quantum cosmological bounce (2016)
Journal Article
Gielen, S., & Turok, N. (2016). Perfect quantum cosmological bounce. Physical Review Letters, 117(2), Article 021301. https://doi.org/10.1103/physrevlett.117.021301

We study quantum cosmology with conformal matter comprising a perfect radiation fluid and a number of conformally coupled scalar fields. Focusing initially on the collective coordinates (minisuperspace) associated with homogeneous, isotropic backgrou... Read More about Perfect quantum cosmological bounce.