http://web.mit.edu/newsoffice/2010/quan ... -1020.htmlWith a variation on the famous double-slit experiment of quantum mechanics, scientists Yves Couder and Emmanuel Fort from the University of Paris 7 are rewriting the textbooks. Their accomplishment, however, has less to do with quantum mechanics than with an observation once considered experimentally impossible: the wave-particle double nature of a macroscopic object (an oil droplet and its associated surface wave).
вроде не обсуждалось ещё?Can fluid dynamics offer insights into quantum mechanics?
Experiments in which fluid droplets mimic the odd behavior of subatomic particles recall an abandoned interpretation of quantum mechanics.
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“One of their first experiments involved sending walkers towards a slit,” Bush says. “As they pass through the slit, they appear to be randomly deflected, but if you do it many times, diffraction patterns emerge.” That is, the droplets strike the far wall of the tray in patterns that reproduce the interference patterns of waves. “Their system is a macroscopic version of the classic single-photon diffraction experiments,” Bush says.
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In a paper published in the same issue of PNAS, which is the subject of Bush’s commentary, Couder’s group reports its most startling discovery. If the vibrating fluid bath is also rotating, a walking droplet will lock into an orbit determined by the troughs of its wave. The notion that a subatomic particle has only a few allowed orbital states is called “quantization,” the very phenomenon that gives quantum mechanics its name.
что смущает в этих экспериментах: вроде как дается объяснение что тот же самый квантовый эффект с интерференцией на самом себе. Но есть одно противоречие: в отличие от фотонов/электронов проходящих "одновременно" через обе щели, в этом эксперименте четко фиксируется через какую щель прошла капелька, т.е. неоднозначности нет, а интерференция вроде как говорит что через вторую щель тоже что-то прошло. Парадокс или просто неправильная аналогия?
