Advances in technology are taking the accuracy of macroscopic as well as microscopic measurements close to the quantum limit, for example, in the attempts to detect gravitational waves. Interest in continuous quantum measurements has therefore grown considerably in recent years. Continuous Quantum Measurements and Path Integrals examines these measurements using Feynman path integrals. The path integral theory is developed to provide formulae for concrete physical effects. The main conclusion drawn from the theory is that an uncertainty principle exists for processes, in addition to the...

Quantum measurement (Le., a measurement which is sufficiently precise for quantum effects to be essential) was always one of the most impor- tant points in quantum mechanics because it most evidently revealed the difference between quantum and classical physics. Now quantum measure- ment is again under active investigation, first of all because of the practical necessity of dealing with highly precise and complicated measurements. The nature of quantum measurement has become understood much bet- ter during this new period of activity, the understanding being expressed by the concept of...

The phenomenon of consciousness includes mysterious aspects providing a basis for many spiritual doctrines and psychological practices. These directions of human knowledge are considered to contradict the laws of science. Quantum mechanics allows us to include the phenomena of consciousness and life and relevant phenomena in the sphere of science.