Circuit locality from relativistic locality in scalar field mediated entanglement
- Author(s)
- Andrea Di Biagio, Richard Howl, Časlav Brukner, Carlo Rovelli, Marios Christodoulou
- Abstract
Locality is a central notion in modern physics, but different disciplines understand it in different ways. Quantum field theory focuses on relativistic locality, based on spacetime regions, while quantum information theory focuses circuit locality, based on the notion of subsystems. Here, we investigate how spacetime and subsystem locality are related in the context of systems getting entangled while interacting via a scalar field. We show how, when the systems are put in a quantum-controlled superposition of localised states, relativistic locality (in the form of microcausality) gives rise to a specific kind of circuit. The relation between these forms of locality is relevant for understanding whether it is possible to formulate quantum field theory in quantum circuit language, and has bearing on the recent discussions on low energy tests of quantum gravity.
- Organisation(s)
- Research Network Quantum Aspects of Space Time, Quantum Optics, Quantum Nanophysics and Quantum Information
- External organisation(s)
- Österreichische Akademie der Wissenschaften (ÖAW), Basic Research Community for Physics, University of London, University of Oxford, Université de Toulon, University of Western Ontario, Perimeter Institute for Theoretical Physics
- Journal
- Quantum
- Volume
- 10
- Pages
- 1-17
- No. of pages
- 17
- ISSN
- 2521-327X
- DOI
- https://doi.org/10.48550/arXiv.2305.05645
- Publication date
- 03-2026
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103024 Quantum field theory
- ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics, Physics and Astronomy (miscellaneous)
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/e71b11ab-a067-4257-b3fc-f5646863f590