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Translation of "Die Messung quantenmechanischer Operatoren" by E.P.~Wigner
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This is a 'facsimile-style' translation of Wigner's seminal paper on measurement limitations in the presence of additive conservation laws. A critical survey of the history of subsequent extensions and variations of what is now known as the Wigner-Araki-Yanase (WAY) Theorem is provided in a paper published concurrently.
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Cited by 3 Pith papers
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Robustness of Noether's principle: Maximal disconnects between conservation laws and symmetries in quantum theory
For rotationally symmetric quantum channels, spin polarization can be inverted by at most a factor of -j/(j+1) and amplified into a larger spin by at most (j_B+1)/(j_A+1), with conservation-law deviation bounded by ch...
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ND-Photonic QRNGs in a Noisy Environment
A noisy photonic 3D QRNG can still be certified as maximally unpredictable by applying the located Kochen-Specker theorem to the pointer states instead of the measured quantum system.
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Exact Solutions for Spin Conserving Models and the Wigner-Araki-Yanase Theorem
Develops an angular momentum conserving measurement model that provides a simple explanation and exact results for the implications of the WAY theorem.
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