, Volume 6, Issue 3, pp 117–126 | Cite as

Interaction between classical and quantum systems and the measurement of quantum observables

  • E C G Sudarshan
Quantum Mechanics


Quantum mechanics presumes classical measuring instruments with which they interact. The problem of measurement interaction between classical and quantum systems is posed and solved. The restriction to compatible measurements comes about naturally as the condition for the integrity of the classical system. A technical device is the perspective on classical mechanics as quantum mechanics with essentially hidden dynamical variables.


Measurement theory quantum observables quantum theory classical dynamics 


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Copyright information

© the Indian Academy of Sciences 1975

Authors and Affiliations

  • E C G Sudarshan
    • 1
  1. 1.Center for Particle TheoryThe University of TexasAustinUSA

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