# Research Talk 21 - A Background Independent Algebra for Quantum Gravity?

### APA

Witten, E. (2023). Research Talk 21 - A Background Independent Algebra for Quantum Gravity?. Perimeter Institute. https://pirsa.org/23070039

### MLA

Witten, Edward. Research Talk 21 - A Background Independent Algebra for Quantum Gravity?. Perimeter Institute, Jul. 28, 2023, https://pirsa.org/23070039

### BibTex

@misc{ pirsa_PIRSA:23070039, doi = {10.48660/23070039}, url = {https://pirsa.org/23070039}, author = {Witten, Edward}, keywords = {Quantum Fields and Strings}, language = {en}, title = {Research Talk 21 - A Background Independent Algebra for Quantum Gravity?}, publisher = {Perimeter Institute}, year = {2023}, month = {jul}, note = {PIRSA:23070039 see, \url{https://pirsa.org}} }

Institute for Advanced Study (IAS) - School of Natural Sciences (SNS)

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Talk Type

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Abstract

To define an algebra of observables in quantum gravity in a way that is universal and does not depend on a background spacetime, one can consider the observables along the worldline of an observer, rather than the observables in a region of spacetime.