Quantum gravity as sum over spacetimes

TL;DR

This paper discusses an approach to quantum gravity using Causal Dynamical Triangulations, aiming to unify general relativity and quantum mechanics through a path integral over spacetime geometries.

Contribution

It introduces and explores the CDT method as a novel way to formulate quantum gravity via a sum over spacetime geometries.

Findings

CDT provides a promising framework for quantum gravity.

Path integral over geometries can be constructed using causal triangulations.

The approach offers insights into the quantum structure of spacetime.

Abstract

A major unsolved problem in theoretical physics is to reconcile the classical theory of general relativity with quantum mechanics. These lectures will deal with an attempt to describe quantum gravity as a path integral over geometries known as "Causal Dynamical Triangulations" (CDT).