QUANTUM INTEGRALS OF MOTION OF TIME-DEPENDENT SYSTEMS AND THE PROBLEM OF MEASURING PHYSICAL QUANTITIES.

We discuss the quantum integrals of motion of time-dependent systems with n degrees of freedom (DOF) and the relationship of those integrals to the problem of measuring physical quantities as part of the analysis of the operation of gravitational wave antennas. Although the integrals of motion of quantum systems are treated within the framework of ordinary quantum mechanics, certain aspects of this problem have been elucidated comparatively recently.