Probability relations between separated systems

@article{Schrdinger1936ProbabilityRB,
  title={Probability relations between separated systems},
  author={Erwin Schr{\"o}dinger},
  journal={Mathematical Proceedings of the Cambridge Philosophical Society},
  year={1936},
  volume={32},
  pages={446 - 452}
}
  • E. Schrödinger
  • Published 1 October 1936
  • Physics
  • Mathematical Proceedings of the Cambridge Philosophical Society
The paper first scrutinizes thoroughly the variety of compositions which lead to the same quantum-mechanical mixture (as opposed to state or pure state). With respect to a given mixture every state has a definite probability (or mixing fraction) between 0 and 1 (including the limits), which is calculated from the mixtures Statistical Operator and the wave function of the state in question. A well-known example of mixtures occurs when a system consists of two separated parts. If the wave… 

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