Maximal rank of extremal marginal tracial states

@inproceedings{Ohno2010MaximalRO,
  title={Maximal rank of extremal marginal tracial states},
  author={Hiromichi Ohno},
  year={2010}
}
States on the coupled quantum system Mn(C)⊗Mn(C) whose restrictions to each subsystem are the normalized traces are called marginal tracial states. We investigate extremal marginal tracial states and compute their maximal rank. Diagonal marginal tracial states are also considered. 

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