Energy conservation holds in quantum measurement when accounting for the full measurement apparatus.
Is it true that energy conservation holds in quantum measurement when accounting for the full measurement apparatus?
Partly. Whether energy conservation holds in quantum measurement when including the apparatus remains heavily debated, with recent studies split between those establishing localized conservation laws and those demonstrating fundamental violations.
Verdict: CONTESTED · 2 sources for, 2 against · Last checked
The retrieved papers show a direct conflict in contemporary quantum thermodynamics and measurement theory. Papers [0] and [1] argue or prove that energy non-conservation and incompatibilities with fluctuation theorems arise during quantum measurement, even when considering broader frameworks. Conversely, Papers [2] and [3] argue that conservation laws can be restored or localized to individual measurement outcomes and apparatus interactions if the measurement schemes are properly formulated or modified. Given these contrasting rigorous theoretical arguments, the claim is best classified as contested.
The evidence we hold leans evenly split
How this was weighed
official record 3x · fact-check 2x · hedged 1x · crowd & reference 1x
- Conservation Laws For Every Quantum Measurement Outcome · peer-reviewed · supports · weight 1.05 · 2024
- Revising the quantum work fluctuation framework to encompass · peer-reviewed · supports · weight 1.05 · 2024
- Energy Non-conservation in Quantum Mechanics · peer-reviewed · refutes · weight 1.3 · 2021
- Energy conservation and fluctuation theorem are incompatible · peer-reviewed · refutes · weight 1.3 · 2021
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Collins, D. & Popescu, S. (2024). Conservation Laws For Every Quantum Measurement Outcome. doi.org. https://doi.org/10.22331/q-2025-07-29-1815
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Carroll, S. & Lodman, J. (2021). Energy Non-conservation in Quantum Mechanics. doi.org. https://doi.org/10.1007/s10701-021-00490-5
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Rubino, G., Hovhannisyan, K., & Skrzypczyk, P. (2024). Revising the quantum work fluctuation framework to encompass energy conservation. doi.org. https://doi.org/10.1038/s41534-025-01053-6
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Hovhannisyan, K. & Imparato, A. (2021). Energy conservation and fluctuation theorem are incompatible for quantum work. doi.org. https://doi.org/10.22331/q-2024-05-06-1336
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