Possible experimental test of local commutativity

Paul Benioff and Hans Ekstein
Phys. Rev. D 15, 3563 – Published 15 June 1977
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A direct experimental test for local commutativity (i.e., [A, B]=0 if A and B are associated with mutually spacelike regions) is proposed. It consists of a comparison of the distribution of outcomes of A measurements in the two cases where A alone is measured (no measurement apparatus for B present) and where both are measured on the same sample, in short, a test of the compatibility of the two observation procedures for A and B. The implication compatibility → commutativity (substantially proved by von Neumann, but questioned by Park and Margenau) is proved in a stronger form, with close attention paid to the distinction between different procedures corresponding to a given self-adjoint operator.

  • Received 25 February 1977


©1977 American Physical Society

Authors & Affiliations

Paul Benioff

  • Chemistry Division, Argonne National Laboratory, Argonne, Illinois 60439

Hans Ekstein

  • Centre de Physique Theorique, C.N.R.S. Marseille, France and Argonne National Laboratory, Argonne, Illinois 60439

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Vol. 15, Iss. 12 — 15 June 1977

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