TY - JOUR
T1 - Measurement of noncanonical variables
AU - Aharonov, Y.
AU - Safko, John L.
PY - 1975/6
Y1 - 1975/6
N2 - We consider the problems of measurements of noncanonical variables such as velocity, kinetic energy, and the electric field in the quantum domain. We show that there is an essential difference between such measurements and the measurements of canonical variables, i.e., noncanonical observables must be changed, in an uncontrollable way, while being measured. We then construct a formal theory for the measurement of noncanonical variables. We apply this theory to measurements of velocity, kinetic energy, and the electric field and show how it clarifies and simplifies previous discussions of these measurements.
AB - We consider the problems of measurements of noncanonical variables such as velocity, kinetic energy, and the electric field in the quantum domain. We show that there is an essential difference between such measurements and the measurements of canonical variables, i.e., noncanonical observables must be changed, in an uncontrollable way, while being measured. We then construct a formal theory for the measurement of noncanonical variables. We apply this theory to measurements of velocity, kinetic energy, and the electric field and show how it clarifies and simplifies previous discussions of these measurements.
UR - https://www.scopus.com/pages/publications/0346618592
U2 - 10.1016/0003-4916(75)90222-5
DO - 10.1016/0003-4916(75)90222-5
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AN - SCOPUS:0346618592
SN - 0003-4916
VL - 91
SP - 279
EP - 294
JO - Annals of Physics
JF - Annals of Physics
IS - 2
ER -