Remarks on the Measurement of Discrete Physical Quantities
The measurability of a physical quantity implies the existence of a corresponding experimental macroscopic device, or measuring apparatus, M — equipped with a reading scale and with instructions on how to couple it with the physical system S under consideration — which has to fulfil a number of necessary requirements to be considered in the sequel.
KeywordsPhysical System Physical Quantity Pure State Density Operator Compound System
Unable to display preview. Download preview PDF.
- 3.E.G. Beltrametti, G. Cassinelli and P.J. Lahti, “Unitary Measurements of Discrete Quantities in Quantum Mechanics”, J. Math. Phys. (to be published).Google Scholar