Abstract
The noncommutativity of the spacetime coordinates has been explored in several contexts, mostly associated with phenomena at the Planck length scale. However, approaching this question through deformation theory and the principle of stability of physical theories, one concludes that the scales of the noncommutativity of the coordinates and the noncommutativity of the generators of translations are independent. This suggests that the scale of the spacetime coordinates’ noncommutativity could be larger than the Planck length. This paper attempts to explore the experimental perspectives to settle this question, either in the lab or by measurements of phenomena of cosmological origin.
- Received 9 January 2019
DOI:https://doi.org/10.1103/PhysRevD.99.123006
Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.
Published by the American Physical Society