From a 1D completed scattering and double slit diffraction to the quantum-classical problem: A new approach

Details From a 1D completed scattering and double slit diffraction to the quantum-classical problem: A new approach From a 1D completed scattering and double slit diffraction to the quantum-classical problem: A new approach

2009-11-16

arxiv.org/abs/0911.2980v4

Physics

Quantum Physics

LaTex, 23 pages, 1 figure, thoroughly rewritten text

Scientific paper

We present a new approach to the quantum-classical problem, which treats it as the problem of modelling the quantum phenomenon described by a coherent superposition of microscopically distinct substates (CSMDS) as a compound one consisting of alternative subprocesses creating unremovable contexts for each other, or as that of reducing a non-Kolmogorovian quantum probability space to underlie a CSMDS to the sum of Kolmogorovian ones. We develop such models for a 1D completed scattering and double slit diffraction. The quantum-classical problem disappears when, in quantum theory with its integral superposition principle, CSMDSs obey the "either-or" rule to guide alternative random events. There is no observable which could be associated with the whole ensemble of statistical data described by a CSMDS, because such data are incompatible -- in the case of a CSMDS, any observable splits into noncommuting observables associated with the substates. To calculate the average value of any observable as well as to introduce characteristic times is meaningful only for the substates of a CSMDS. Ignoring this feature in the conventional description of CSMDSs just leads to paradoxical results (e.g., to the Hartman effect and passing a particle through two slits in the screen simultaneously).

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