• Measurement, Lüders and von Neumann projections and non-locality

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    • Keywords


      Measurement postulate, Lüders ansatz; Neumann projections; non-locality; EPR.

    • Abstract


      The nature of the Lüders projection and its relationship with the von Neumann projection are clarified. It is shown that Lüders-like transformations can be obtained by local unitary transformations on single and productstates, but not entangled states. Several examples are given to illustrate this. The distinction between the two projections is further clarified by the analyses of the measurement process on both entangled and single-particle systems. A possible experimental test of the Lüders postulate for non-degenerate systems is also proposed.

    • Author Affiliations



      1. CEASP, O P Jindal Global University, Sonipat 131 001, India
      2. Tagore Centre for Natural Sciences and Philosophy, Rabindra Tirtha, New Town, Kolkata 700 156, India
    • Dates

  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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