
arXiv: 1904.00598
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.
High Energy Physics - Theory, Cosmology and Nongalactic Astrophysics (astro-ph.CO), loop quantum gravity, Quantum gravity, quantum cosmology, Elementary particle physics, FOS: Physical sciences, QC793-793.5, General Relativity and Quantum Cosmology (gr-qc), Quantum cosmology, Loop quantum gravity, 520, General Relativity and Quantum Cosmology, group field theory, High Energy Physics - Theory (hep-th), quantum gravity, quantum geometry, Quantum geometry, Group field theory, Astrophysics - Cosmology and Nongalactic Astrophysics
High Energy Physics - Theory, Cosmology and Nongalactic Astrophysics (astro-ph.CO), loop quantum gravity, Quantum gravity, quantum cosmology, Elementary particle physics, FOS: Physical sciences, QC793-793.5, General Relativity and Quantum Cosmology (gr-qc), Quantum cosmology, Loop quantum gravity, 520, General Relativity and Quantum Cosmology, group field theory, High Energy Physics - Theory (hep-th), quantum gravity, quantum geometry, Quantum geometry, Group field theory, Astrophysics - Cosmology and Nongalactic Astrophysics
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