Journal
FRONTIERS IN PHYSICS
Volume 9, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/fphy.2021.655857
Keywords
quantum gravity; spectral geometry; shannon sampling theory; quantum information; general relativity
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Funding
- National Science and Engineering Council of Canada (NSERC)
- Australian Research Council (ARC)
- Google Faculty Research Award
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This study presents a new perspective where the traditional concepts of spacetime and matter are replaced by the notion of correlation strength, suggesting that abstract correlations are the primary structure. In the low energy regime, spacetime and matter emerge as approximate representations of abstract correlators.
Spacetime is conventionally viewed as a stage on which actors, in the form of massive and massless matter, move. In this study, we explore what may lie beyond this picture. The starting point is the observation that quantum field fluctuations are the more strongly correlated the shorter their spacetime distance. The notion of spacetime distance can, therefore, be replaced by the notion of correlation strength. This suggests a new picture in which the abstract 2-point and multi-point correlations are the primary structure, a picture which is essentially information-theoretic. In the low energy regime, the secondary notions of spacetime and of matter would then emerge as approximate representations of the abstract correlators, namely, in the form of Feynman rules on curved spacetime.
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