Hypercuboidal renormalization in spin foam quantum gravity

Understand

In this article we apply background-independent renormalization group methods to spin foam quantum gravity.

• It is aimed at extending and elucidating the analysis of a companion letter, in which the existence of a fixed point in the truncated RG flow for the model was reported.
• Here we repeat the analysis with various modifications, and find that both qualitative and quantitative features of the fixed point are robust in this setting.
• We also go into details about the various approximation schemes employed in the analysis.