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Open Quantum Systems Decoherence
Causal measurement in quantum field theory: spacetime
arXiv
Authors: Robert Oeckl
Year
2025
Paper ID
17411
Status
Preprint
Abstract Read
~2 min
Abstract Words
77
Citations
N/A
Abstract
We provide a framework and explicit construction for the regularized measurement of a large class of spacetime-localized observables in bosonic quantum field theory. The measurements fully satisfy relativistic causality and causal transparency, i.e., avoid unphysical superluminal signaling. We show explicitly how the measurement of time-extended observables back-reacts on itself and induces correlations between other measurements in its causal future. Our framework is fully compositional in spacetime and extends previous results on the measurement of instantaneous observables.
Why This Paper Matters
- This paper contributes to the Open Quantum Systems & Decoherence research area in the Quantum Articles archive.
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- We provide a framework and explicit construction for the regularized measurement of a large class of spacetime-localized observables in bosonic quantum field theory.
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