Background independent field quantization with sequences of gravity-coupled approximants. II. Metric fluctuations

  title={Background independent field quantization with sequences of gravity-coupled approximants. II. Metric fluctuations},
  author={Maximilian Becker and Martin Reuter},
  journal={Physical Review D},
We apply the new quantization scheme outlined in Phys. Rev. D102 (2020) 125001 to explore the influence which quantum vacuum fluctuations of the spacetime metric exert on the universes of Quantum Einstein Gravity, which is regarded an effective theory here. The scheme promotes the principle of Background Independence to the level of the regularized precursors of a quantum field theory ("approximants") and severely constrains admissible regularization schemes. Without any tuning of parameters… 

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