Renormalization for spin foam models of quantum gravity

TL;DR

This paper introduces the concept of renormalization in background-independent models, specifically applying it to spin foam models in quantum gravity, to understand their behavior at different scales.

Contribution

It provides an introductory overview of renormalization techniques tailored for background-independent quantum gravity models like spin foams.

Findings

Framework for renormalization in spin foam models

Insights into scale behavior of quantum gravity models

Foundational steps for future quantitative analysis

Abstract

We give an introductory account to the renormalization of models without metric background. We sketch the application to certain discrete models of quantum gravity such as spin foam models.