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4 papers · 2 filters
The norm-1-property of a quantum observable
T. Heinonen, P. Lahti, J. -P. Pellonpaa +2
A normalized positive operator measure has the norm-1-property if $\no{E(X)}=1$ whenever . This property reflects the fact that the measurement outcome p…
Coexistence and Joint Measurability in Quantum Mechanics
Pekka Lahti
This talk is a survey of the question of joint measurability of coexistent observables and its is based on the monograph Operational Quantum Physics [1] and on the papers [2,3,4].
Covariant phase difference observables
T. Heinonen, P. Lahti, J. -P. Pellonpaa
Covariant phase difference observables are determined in two different ways, by a direct computation and by a group theoretical method. A characterization of phase difference obser…
A dilemma in representing observables in quantum mechanics
D. A. Dubin, M. A. Hennings, P. Lahti +1
There are self-adjoint operators which determine both spectral and semispectral measures. These measures have very different commutativity and covariance properties. This fact pose…