# Minisuperspace results for causal dynamical triangulations

## TL;DR

This paper compares minisuperspace methods with causal dynamical triangulations (CDTs) to understand quantum gravity, revealing agreements and providing insights into fluctuations, with suggestions for future CDT experiments and simulations.

## Contribution

It introduces a minisuperspace approach to analyze CDT results, clarifies conceptual issues, and proposes new simulations based on theoretical predictions.

## Key findings

- Agreement between minisuperspace and CDT results on fluctuations
- Insights into the treatment of time and quantum fluctuations
- Proposals for new CDT simulations inspired by minisuperspace analysis

## Abstract

Detailed applications of minisuperspace methods are presented and compared with results obtained in recent years by means of causal dynamical triangulations (CDTs), mainly in the form of effective actions. The analysis sheds light on conceptual questions such as the treatment of time or the role and scaling behavior of statistical and quantum fluctuations. In the case of fluctuations, several analytical and numerical results show agreement between the two approaches and offer possible explanations of effects that have been seen in causal dynamical triangulations but whose origin remained unclear. The new approach followed here suggests `CDT experiments' in the form of new simulations or evaluations motivated by theoretical predictions, testing CDTs as well as the minisuperspace approximation.