International Journal of Theoretical Physics

, Volume 17, Issue 8, pp 635–641 | Cite as

A-entropy for generalized observables

  • Marian Grabowski


We investigateA-entropy with respect to certain semispectral measures in a given state. It is shown that the entropy with respect to an observable describing “simultaneous” measurement of position and momentum is greater than the von Neumann entropy. Similar results are obtained for the fuzzy and sharp positions. The continuity properties of this entropy are also examined.


Entropy Field Theory Elementary Particle Quantum Field Theory Continuity Property 
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Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • Marian Grabowski
    • 1
  1. 1.Institute of PhysicsNicholas Copernicus UniversityToruńPoland

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