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Foundations of Physics

, Volume 47, Issue 4, pp 467–470 | Cite as

Comment on “Non-representative Quantum Mechanical Weak Values”

Article

Abstract

Svensson (Found Phys 45: 1645, 2015) argued that the concept of the weak value of an observable of a pre- and post-selected quantum system cannot be applied when the expectation value of the observable in the initial state vanishes. Svensson’s argument is analyzed and shown to be inconsistent using several examples.

Keywords

Weak value Weak measurement Past of photon Nested interferometer Two-state vector formalism 

Notes

Acknowledgements

We thank Lukas Knips, Jan Dziewior and Jasmin Meinecke for useful discussions. This work has been supported in part by the Israel Science Foundation Grant No. 1311/14 and the German-Israeli Foundation for Scientific Research and Development Grant No. I-1275-303.14.

References

  1. 1.
    Svensson, B.E.Y.: Non-representative quantum mechanical weak values. Found. Phys. 45, 1645 (2015)MathSciNetCrossRefMATHADSGoogle Scholar
  2. 2.
    Aharonov, Y., Albert, D.Z., Vaidman, L.: How the result of a measurement of a component of the spin of a spin-\(\frac{1}{2}\) particle can turn out to be 100. Phys. Rev. Lett. 60, 1351 (1988)CrossRefADSGoogle Scholar
  3. 3.
    Vaidman, L.: Past of a quantum particle. Phys. Rev. A 87, 052104 (2013)CrossRefADSGoogle Scholar
  4. 4.
    Vaidman, L.: Tracing the past of a quantum particle. Phys. Rev. A 89, 024102 (2014)CrossRefADSGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2017

Authors and Affiliations

  1. 1.Raymond and Beverly Sackler School of Physics and AstronomyTel-Aviv UniversityTel-AvivIsrael

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