Causal measurement in quantum field theory: spacetime
Fuente:
arXiv
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866914441311813632 |
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| author | Oeckl, Robert |
| author_facet | Oeckl, Robert |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_06566 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Causal measurement in quantum field theory: spacetime Oeckl, Robert High Energy Physics - Theory Quantum Physics 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. |
| title | Causal measurement in quantum field theory: spacetime |
| topic | High Energy Physics - Theory Quantum Physics |
| url | https://arxiv.org/abs/2511.06566 |