2019 International Workshop: Beyond Bell’s theorem

About Wigner Friend’s and Hardy’s paradox in a Bohmian approach

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This topic contains 1 reply, has 1 voice, and was last updated by Avatar Aurelien Drezet 2 months, 1 week ago.

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  • #5531
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    Aurelien Drezet
    Participant

    This [1] is an analysis of the recently published article ‘Quantum
    theory cannot consistently describe the use of itself’ by D. Frauchiger and
    R. Renner [1]. Here I decipher the paradox and analyze it from the point of
    view of de Broglie-Bohm hidden variable theory (i.e., Bohmian mechanics).
    I also analyze the problem from the perspective obtained by the Copenhagen
    interpretation (i.e., the Bohrian interpretation) and show that both views are
    self consistent and do not lead to any contradiction with a ‘single-world’
    description of quantum theory.
    [1] A. Drezet,About Wigner Friend’s and Hardy’s paradox in a Bohmian approach: a comment of “Quantum theory cannot consistently describe the use of itself”, IJQF Volume 5, Issue 2, pages 80-97 (2019).
    [2]D. Frauchiger and R. Renner,Quantum theory cannot consistently describe the use ofitself, Nature Communications 9, 3711 (2018).

    #5552
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    Aurelien Drezet
    Participant

    I forgot the link to the paper: https://www.ijqf.org/archives/5401
    I use this occasion to add a link to a related paper I recently submitted
    (arxiv : https://arxiv.org/abs/1904.08134) with the title
    ‘Lorentz-invariant, retrocausal, and deterministic hidden variables’.
    This work focuses on Gisin’s and Hardys’ claim purporting the impossibility of Lorentz-invariant deterministic hidden-variable model for explaining quantum nonlocality. Those theorems claim that the only known solution to escape the conclusions is either to accept a preferred reference frame or to abandon the hidden-variable program altogether. Here we present a different alternative based on a foliation dependent framework adapted to deterministic hidden variables. We analyse the impact of such an approach on Bohmian mechanics and show that retrocausation (that is future influencing the past) necessarily comes out without time-loop paradox.

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