Spacetime events from the inside out
Abstract
We argue that special and general theories of relativity implicitly assume spacetime events correspond to quantum measurement outcomes. This leads to a change in how one should view the equivalence of spacetime and gravity. We describe a Bell test using time-like measurements that indicates a non classical causal structure that does not violate no-signaling. From this perspective, the violation of the Bell inequalities are already evidence for the non classical structure of flat spacetime as seen by an agent embedded in it. We argue that spacetime geometry can be learned by an embedded agent with internal actuators and sensors making internal measurements.
Cite
@article{arxiv.2503.08715,
title = {Spacetime events from the inside out},
author = {G. J. Milburn},
journal= {arXiv preprint arXiv:2503.08715},
year = {2025}
}
Comments
To appear in the proceedings of "Quantum Gravity and Computation", Routledge Series on Philosophy of Physics and Mathematics. Revised version