The theory of KdV equations allows to construct examples of physically different canonical structures for the same Hamilton operator. These examples are unproblematic in pilot wave and dynamical collapse theories, which define a physically distinguished configuration space Q, and in the Copenhagen interpretation, which identifies the canonical operators with classical descriptions of the corres...

We construct a rigourous model of quantum measurement. A two-state model of a negative temperature amplifier, such as a laser, is taken to a classical thermodynamic limit. In the limit, it becomes a classical measurement apparatus obeying the stochastic axioms of quantum mechanics. Thus we derive the probabilities from a deterministic Schroedinger's equation by procedures analogous to those of ...

The most debated status of the wave function Quantum Mechanics is discussed in light epistemological vs ontological opposition.