activity
19942026
most citedEmergent Geometry and Gravity from Matrix Models: an Introduction

230 citations · 2.6k across the 114 of their papers we have counts for

collaborators

116 papers

hep-th2026

Quantum spacetime and gravity from the IKKT matrix model: an invitation

Harold C. Steinacker

This is a concise and compact introduction to a framework for spacetime, gravity, and fundamental physics based on the IKKT matrix model, focusing on conceptual and structural aspe…

hep-th2026

Quantum spacetime and quantum fluctuations in the IKKT model at weak coupling

Harold C. Steinacker

This paper aims to clarify conceptual aspects of emergent structure in IKKT-type matrix models. Even without any adjustable parameters in the action, non-trivial matrix vacua do ac…

hep-th2025★ 3 cited

Spatially flat FLRW spacetimes with a Big Bang from matrix geometry

Christian Gaß, Harold Steinacker

We present an expanding, spatially flat () FLRW quantum spacetime with a Big Bang, considered as a background in Yang-Mills matrix models. The FLRW geometry emerges in the sem…

hep-th2025

Minimal covariant quantum space-time

Alessandro Manta, Harold C. Steinacker

We discuss minimal covariant quantum space-time , which is defined through the minimal doubleton representation of . An elementary definition…

hep-th2024

-extended gravity from the IKKT matrix model

Alessandro Manta, Harold C. Steinacker, Tung Tran

We elaborate further on the one-loop effective action of the IKKT model on 3 + 1 dimensional covariant quantum spacetime in the presence of fuzzy extra dimensions. In particular, w…

hep-th2024

Quantum -Yang-Mills from the IKKT matrix model

Harold C. Steinacker, Tung Tran

We study the one-loop effective action of the higher-spin gauge theory induced by the IKKT matrix model on a background, where $\mathcal{M}^{1…