58 citations · 218 across the 12 of their papers we have counts for
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math-ph2013★ 16 cited
Stochastic Isometries in Quantum Mechanics
Paul Busch
The class of stochastic maps, that is, linear, trace-preserving, positive maps between the self-adjoint trace class operators of complex separable Hilbert spaces plays an important…
math-ph2013★ 58 cited
Effects as functions on projective Hilbert space
P. Busch, S. P. Gudder
The set of effect operators in a complex Hilbert space can be injectively embedded into the set of functions from the set of one-dimensional projections to the real interval [0,1].…