Background Independent Field Quantization with Sequences of Gravity-Coupled Approximants II: Metric Fluctuations

Understand

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.