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quant-ph2000★ 13 cited
Subnormal operators regarded as generalized observables and compound-system-type normal extension related to su(1,1)
Masahito Hayashi, Fuminori Sakaguchi
In this paper, subnormal operators, not necessarily bounded, are discussed as generalized observables. In order to describe not only the information about the probability distribut…
quant-ph1999
su(1,1) coherent states and a normal extension of su(1,1) annihilation operator: squeezed states and the simultaneous measurement of Q^{-1}P+PQ^{-1} and Q^{-2}
Fuminori Sakaguchi, Masahito Hayashi
The the over-complete eigenvector system of the operator Q^{-1}P (Q:position, P:momentum) which consists of the squeezed states |0; s, t > with various s and t are investigated fro…