Statistical Mechanics of Amplifying Apparatus

摘要

We implement Feynman's suggestion that the only missing notion needed for thepuzzle of Quantum Measurement is the statistical mechanics of amplifyingapparatus. We define a thermodynamic limit of quantum amplifiers which is aclassically describable system in the sense of Bohr, and define macroscopicpointer variables for the limit system. Then we derive the probabilities ofQuantum Measurement from the deterministic Schroedinger equation by the usualtechniques of Classical Statistical Mechanics.