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math.OA2014★ 1 cited
The analogue of Choi matrices for a class of linear maps on Von Neumann algebras
Erling Stormer
The definition of Choi matrices for linear maps on the n x n matrices is extended to factors, and the basic theorems for Choi matrices are proved in this general context.
math-ph2014
Superposition, transition probabilities and primitive observables in infinite quantum systems
Detlev Buchholz, Erling Størmer
The concepts of superposition and of transition probability, familiar from pure states in quantum physics, are extended to locally normal states on funnels of type I facto…