# New higher-order transition in causal dynamical triangulations

## TL;DR

This paper reexamines a phase transition in Causal Dynamical Triangulations, providing evidence it is higher order, and explores how massless scalar fields affect this transition and the geometry.

## Contribution

It offers new evidence that the bifurcation phase transition in CDT is higher order and studies the effects of scalar fields on the transition and geometry.

## Key findings

- The bifurcation transition is likely higher order.
- Scalar fields influence the position of the phase transition.
- Scalar fields affect spatial volume and fluctuation profiles.

## Abstract

We reinvestigate the recently discovered bifurcation phase transition in Causal Dynamical Triangulations (CDT) and provide further evidence that it is a higher order transition. We also investigate the impact of introducing matter in the form of massless scalar fields to CDT. We discuss the impact of scalar fields on the measured spatial volumes and fluctuation profiles in addition to analysing how the scalar fields influence the position of the bifurcation transition.