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Quantum Engineering Grenoble Online Reading Group || Quantum Foundations - Hippolyte Dourdent

on the April 23, 2021

at 3-5pm
The Physics-Philosophy Interface and the Chair of Excellence in Philosophy of Quantum Physics at the QuEnG are pleased to announce the first meeting of the 2021 cycle of seminars in 'Foundations of Quantum Mechanics'---see below for further information about these seminars.
This Friday, April 23rd, at 3-5pm (CET), Hippolyte Dourdent (Institut Néel) will be giving a talk entitled 'A Gödelian Hunch from Quantum Theory: The Measurement Problem as a Self-Referential Paradox'. Here's the abstract:
 

In a paper entitled ``Is Logic Empirical ?'', Hilary Putnam defended the idea that logic might be considered as an experimentally refutable science: if quantum physics goes against classical logic, then classical logic should be revised. Mirroring this question, we ask ``Is Physics Paradoxical ?'' Is Nature itself parodoxical ; does it really feature strange phenomena that cannot be grasped with our words, whether it is a non-local behaviour or parallel worlds ? I argue for an alternative. What if the paradoxical nature of quantum theory could find its source in some undecidability similar to that of Gödel's incompleteness theorem ? What if the measurement problem was nothing more than a logical error ? I will argue for such ``Gödelian hunch'' (as coined in [Szangolies, Found Phys48,1669–1697 (2018)]) by analyzing the measurement problem and the Wigner's Friend thought experiment as emerging from a self-referential inconsistency. The latter can be avoided by complying with the concept of ``meta-contextuality'': every use of quantum theory is inextricably bound with the meta-context, the distinction between theoretical objects (the ``quantum system'') and meta-theoretical objects (the ``observer'').  I will then give my personal analysis of the recent paradox by Frauchiger and Renner [Frauchiger, Renner, Nat Commun 9, 3711 (2018)] in the light of such view. Finally, I will compare these analysis with diverse interpretations of quantum theory. In particular, I will present how ``meta-contextuality'' underlies the ``neo-Copenhagen'' interpretations.

 
If you are not already in the mailing list for these seminars, and you wish to join, please contact me (Cristian Mariani; cristian.mariani@neel.cnrs.fr) for further information. The meeting will be held online on the platform Zoom.

This reading group is a new QuEnG initiative that starts in February 2020, from an idea of the PhDs and Postdocs interested in quantum foundations. Its aim is to bring together philosophers of science and physicists to discuss topics in the foundations of quantum mechanics. For the year 2021, the selected topic is Philosophical Issues in Quantum Mechanics. Due to the Covid-19 health crisis, the reading group will be held online, on a weekly basis. A list of our past guests includes: Valia Allori, Alexia Auffeves, Angelo Bassi, Jean Bricmont, Craig Callender, Mauro D’Ariano, Aurelien Drezet, Nicolas Gisin, Philippe Grangier, Peter Lewis, Vera Matarese, Tim Maudlin, Carlo Rovelli, Paul Tappenden, Giuliano Torrengo, and Lev Vaidman. Here you can find some of the recorded meetings.
Published on April 26, 2021

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