# Introduction

## Welcome to the Institute for Theoretical Physics III (Quantum Gravity)

*Image Copyright: MPI für Gravitationsphysik (Albert-Einstein-Institut), MildeMarketing, Exozet*

## Quantum Gravity

## What is Quantum Gravity?

According to our current knowledge, the foundations of physics rest on two guiding principles: General Relativity (GR) and Quantum Theory (QT). GR is Einstein’s theory of the gravitational force while QT is the cornerstone of Quantum Field Theory (QFT), the framework underlying elementary particle physics. QFT describes all known interactions of matter, that is, the electromagnetic, weak and strong force together with all elementary particles, that is, fermions (the charged leptons such as the electron, the neutral leptons such as the electron neutrino, and the quarks, such as up and down quarks which are the building blocks for neutron and proton) and bosons (photon, W-and Z bosons and gluon). Together these particles are embedded into the standard model of all matter. The only interaction that is not described by QT today is the gravitational interaction. We refer the reader to the Research page, in order to understand why this is an important problem of foundational physics, why a combined theory of GR and QT, called Quantum Gravity (QG), is necessary, why such a synthesis is a challenge for theoretical and mathematical physics and how QG connects with the most interesting questions and puzzles of contemporary high precision experimental cosmology and astrophysics.

## The Institute

The Institute for Theoretical Physics III is a research group at the Friedrich-Alexander-University Erlangen-Nuremberg with focus on Quantum Gravity. The Institute is part of the ECAP, the Erlangen Centre for Astroparticle Physics.

## Our Key Topics

## Latest News

## Postdoctoral position at the Institute for Quantum Gravity starting in fall 2025

In autumn 2025, at least one postdoctoral position in the field of non-perturbative quantum gravity, including mathematical foundations, quantum cosmology, quantum black holes, numerical quantum gravity and quantum gravity phenomenology as well as topics in quantum foundations and quantum informatio...

## DIPHER 24 – DIVERSITY IN PHYSICS FOR THE DIVERSITY OF PHYSICS – ERLANGEN 2024

We are pleased to announce the DIPHER-24 Conference, which will take place at Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU) from 5th to 7th November. The event is co-organised by members of Institute for Theoretical Physics III (Quantum Gravity), in collaboration with other contributors fr...

## Linked-in Page

We are happy to introduce our LinkedIn page for the Institute for Quantum Gravity at the FAU Erlangen-Nürnberg.

## FAU^2 workshop on quantum black holes and the relation to asymptotic infinity 25.-27.06.24 at ECAP Lab

The FAU^2 focus workshop is to promote scientific exchange between different quantum gravity groups world wide on recent results and open questions on quantum black holes and the relation to asymptotic infinity. It is organised by the Florida Atlantic University (FAU) and FAU Erlangen-Nürnberg and...