# Quantum space-time and gravity from the IKKT matrix model

### APA

Steinacker, H. (2022). Quantum space-time and gravity from the IKKT matrix model. Perimeter Institute. https://pirsa.org/22090079

### MLA

Steinacker, Harold. Quantum space-time and gravity from the IKKT matrix model. Perimeter Institute, Sep. 07, 2022, https://pirsa.org/22090079

### BibTex

@misc{ pirsa_PIRSA:22090079, doi = {10.48660/22090079}, url = {https://pirsa.org/22090079}, author = {Steinacker, Harold}, keywords = {Quantum Gravity}, language = {en}, title = {Quantum space-time and gravity from the IKKT matrix model}, publisher = {Perimeter Institute}, year = {2022}, month = {sep}, note = {PIRSA:22090079 see, \url{https://pirsa.org}} }

Harold Steinacker University of Vienna

## Abstract

We discuss how 3+1-dimensional physics including gravity can arise in the IKKT or IIB matrix model. The model is related to string theory, but it also provides a direct and accessible definition of 3+1-dimensional physics on suitable backgrounds. This leads to a higher-spin extension of gravity on covariant quantum space-time with manifest volume-preserving diffeos, which is UV finite at one loop.

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