Abstract
The representation of the observables of a physical system as self-adjoint operators on Hilbert space is traditionally motivated by making reference to the correspondence principle or by invoking some quantisation scheme, such as the transcription of the Lie algebra structure from phase space to Hilbert space. There exists an alternative approach which refers directly to the operationally relevant features of these observables. This relativistic approach has the advantage of being open to the consideration of unsharp observables, which turns out necessary in some cases where sharp ‘observables’ simply do not exist or are not amenable to measurements.
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(1995). Observables. In: Operational Quantum Physics. Lecture Notes in Physics Monographs, vol 31. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-49239-9_3
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DOI: https://doi.org/10.1007/978-3-540-49239-9_3
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