Cosmological evolution as squeezing: a toy model for group field cosmology

@article{Adjei2018CosmologicalEA,
  title={Cosmological evolution as squeezing: a toy model for group field cosmology},
  author={Eugene Adjei and Steffen Gielen and W. Wieland},
  journal={Classical and Quantum Gravity},
  year={2018},
  volume={35},
  pages={105016}
}
  • Eugene Adjei, Steffen Gielen, W. Wieland
  • Published 2018
  • Physics
  • Classical and Quantum Gravity
  • We present a simple model of quantum cosmology based on the group field theory (GFT) approach to quantum gravity. The model is formulated on a subspace of the GFT Fock space for the quanta of geometry, with a fixed volume per quantum. In this Hilbert space, cosmological expansion corresponds to the generation of new quanta. Our main insight is that the evolution of a flat Friedmann–Lemaitre–Robertson–Walker universe with a massless scalar field can be described on this Hilbert space as… CONTINUE READING
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