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- W4387561251 abstract "We present and investigate two issues with the measurement scheme for QFT presented by J. Polo-Gomez, J. J. Garay and E. Martin-Martinez in A detector-based measurement theory for quantum field theory. We point out some discrepancies that arise when applying the measurement scheme to contextual field states. Also, we show that $n$-point function assignments based on local processing regions lead to inconsistencies for some choices of spacetime points, e.g. across measurement light cones. To solve these two issues, we propose a modification to the measurement scheme. The proposal is a rule for assigning (equivalence classes of) algebraic states to spacetime regions. In this way, the measurement-induced collapse is represented in the formal expression of the states, and $n$-point functions can be consistently evaluated across any region having a definite causal relation with measurements." @default.
- W4387561251 created "2023-10-12" @default.
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- W4387561251 date "2023-10-10" @default.
- W4387561251 modified "2023-10-13" @default.
- W4387561251 title "Detector-based measurements for QFT: two issues and an AQFT proposal" @default.
- W4387561251 doi "https://doi.org/10.48550/arxiv.2310.06596" @default.
- W4387561251 hasPublicationYear "2023" @default.
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