Journal of Statistical Physics

, Volume 58, Issue 5–6, pp 1209–1230 | Cite as

Model apparatus for quantum measurements

  • Bernard Gaveau
  • L. S. Schulman


We present a model system that behaves as a measurement apparatus for quantum systems should. The device is macroscopic, it interacts with the microscopic system to be measured, and the results of that interaction affect the macroscopic device in a macroscopic, irreversible way. Everything is treated quantum mechanically: the apparatus is defined in terms of its (many) coordinates, the Hamiltonian is given, and time evolution follows Schrödinger's equation. It is proposed that this model be itself used as a laboratory for testing ideas on the measurement process.

Key words

Quantum measurement theory apparatus models 


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Copyright information

© Plenum Publishing Corporation 1990

Authors and Affiliations

  • Bernard Gaveau
    • 1
  • L. S. Schulman
    • 2
  1. 1.MathematiquesUniversité Pierre et Marie CurieParis Cedex 05France
  2. 2.Physics DepartmentClarkson UniversityPotsdam

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