The “transition probability” in the state space of a ∗-algebra

Apr, 1976
7 pages
Published in:
  • Rept.Math.Phys. 9 (1976) 2, 273-279
  • Published: Apr, 1976

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Abstract: (Elsevier)
Let ω,ϱ be two states of a ∗-algebra and let us consider representations of this algebra R for which ω and ϱ are realized as vector states by vectors x and y . The transition probability P ( ω , ϱ ) is the spectrum of all the numbers |( x , y )| 2 taken over all such realizations. We derive properties of this straightforward generalization of the quantum mechanical transition probability and give, in some important cases, an explicit expression for this quantity.
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