Understanding the Frauchiger–Renner Argument

@article{Bub2020UnderstandingTF,
  title={Understanding the Frauchiger–Renner Argument},
  author={Jeffrey Bub},
  journal={arXiv: Quantum Physics},
  year={2020}
}
  • J. Bub
  • Published 19 August 2020
  • Philosophy
  • arXiv: Quantum Physics
In 2018, Daniela Frauchiger and Renato Renner published an article in Nature Communications entitled `Quantum theory cannot consistently describe the use of itself.' I clarify the significance of the result and point out a common and persistent misunderstanding of the argument, which has been attacked as flawed from a variety of interpretational perspectives. 

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References

SHOWING 1-10 OF 14 REFERENCES

Frauchiger-Renner argument and quantum histories

In this article we reconstruct the Frauchiger and Renner's argument [1] taking into account that the assertions of the argument are made at different times. In order to do that, we use a formalism

Wigner's convoluted friends

  • R. MucinoE. Okon
  • Philosophy
    Studies in History and Philosophy of Science Part B: Studies in History and Philosophy of Modern Physics
  • 2020

Remarks on the Mind-Body Question

F. Dyson, in a very thoughtful article,1 points to the everbroadening scope of scientific inquiry. Whether or not the relation of mind to body will enter the realm of scientific inquiry in the near

Quantum theory cannot consistently describe the use of itself

A variant of Wigner’s friend Gedankenexperiment where each of the current interpretations of QM fails in giving a consistent description, indicating that quantum theory cannot be extrapolated to complex systems, at least not in a straightforward manner.

Quantum mechanics, local realistic theories, and Lorentz-invariant realistic theories.

  • Hardy
  • Physics, Mathematics
    Physical review letters
  • 1992
Bell's theorem is demonstrated, without using inequalities, for an experiment with two particles, and it is shown that, if realism and Lorentz-invariant observables are assumed, it can derive a contradiction with quantum mechanics.

Quantum Theory: Concepts and Methods

Preface. Part I: Gathering the Tools. 1. Introduction to Quantum Physics. 2. Quantum Tests. 3. Complex Vector Space. 4. Continuous Variables. Part II: Cryptodeterminism and Quantum Inseparability. 5.

Nonlocality for two particles without inequalities for almost all entangled states.

  • Hardy
  • Physics
    Physical review letters
  • 1993
It is shown that it is possible to demonstrate nonlocality for two particles without using inequalities for all entangled states except maximally entangled states such as the singlet state. The

Interpreting the Quantum World

Introduction 1. From classical to quantum mechanics 2. Bell's 'no-go' theorem 3. The Kochen and Specker 'no-go' theorem 4. The proof of interpretation 5. Quantum mechanics without observers: I 6.

Quantum Theory: Concepts and Methods (Springer: New York, 19950

  • 1995

  • 1961