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Pilot-wave hydrodynamics (Quantum phenomena in macroscopic hydrodynamic systems)

37 points - last Friday at 7:52 PM

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  • isoprophlex

    today at 8:27 AM

    I thought the images were old school POVRay renders. Turns out they have a visualisation setup, and they're real pictures!

    Video:

    https://gfm.aps.org/meetings/dfd-2015/55f71c7b69702d060d7505...

    Paper:

    https://thales.mit.edu/bush/wp-content/uploads/2017/01/GFM-P...

    • today at 8:42 AM

      • aggrrrh

        today at 8:24 AM

        It's a real shame that de Broglie Bohm theory gets so little attention compared with the mainstream interpretation.

          • quantum_mcts

            today at 9:27 AM

            The whole idea of Bohmian mechanics is to preserve the notion of ยซ classical trajectory ยป while trying to cover existing experimental evidence for QM. I was a fan of it ant the University - but slowly realised that the strategy seems to be just add the classical-limit consequences of the QM as extra postulates. And even that approach faced larger and larger obstacles - like fermions statistics, the QFT with creation / annihilation of particles, spinor fields requiring Grassmanian ยซ classical trajectories ยป and the whole thing still requires preferred reference frame - in obvious contradiction with basic SR.

            This whole story is very similar to attempts of physics fringe to preserve the notion of ยซ aether ยป while satisfying the experimental evidence for SR.

              • _bobm

                today at 9:51 AM

                What do you think about the efforts of Hiley and Denis [1], which may suggest that the pilot wave may be a manifestation, a mathematical projection, of a deeper physical process which hierarchically gives way to the pilotwave, particles, like a coordinati9n space.

                [1] https://www.mdpi.com/2073-8994/16/1/67

            • fpoling

              today at 8:42 AM

              Bohm interpretation is not compatible with relativity. One can argue that Copenhagen interpretation is also not compatible, but then from practical purposes both interpretations are equivalent and predict the same results so why bother with changing explanations when the new one still does not address the fundamental problem.

                • _bobm

                  today at 9:44 AM

                  One can argue it gives better ontology of what is going on, but shifts the burden further into what the pilot wave is. And this actually is far more complicated maybe than QM itself.