On Tue, Jul 6, 2021 at 11:41 PM smitra <[email protected]> wrote: > On 06-07-2021 14:10, Bruce Kellett wrote: > > > > It is a shame that your fancy analysis is contradicted by the actual > > experimental results. I leave it as an exercise for you to determine > > where your mistake is. But I suggest that you actually reads the paper > > quant-ph/0412003. > > The analysis is 100% rigorous, based on standard QM. The results of the > paper quant-ph/0412003 are irrelevant as they don't measure the joint > interference pattern.
It is only your confused notion that even considers such a thing to be relevant. Hornberger et al. give a complete and detailed quantum analysis of their experiment and show that their results are in complete accordance with quantum theory. The thing is that you have to take their experiment results, particularly as shown in Fig 8 of the paper, seriously. They show that the interference fringes are gradually washed out as the temperature of the balls increases. I quote their abstract: "We study C_70 fullerene matter waves in a Talbot-Lau interferometer as a function of their temperature. While the ideal fringe visibility is observed at moderate molecular temperatures, we find a gradual degradation of the interference contrast if the molecules are heated before entering the interferometer. A method is developed to assess the distribution of the micro-canonical temperature of the molecules in free flight. This way the heating-dependent reduction of the interference contrast can be compared with the predictions of quantum theory. We find that the observed loss of coherence agrees quantitatively with the expected decoherence rate due to the thermal radiation emitted by the hot molecules." In that case the interference pattern of the balls > will vanish due to the photon states being orthogonal, as I've shown > above. > > > > >> The argument against the existence of parallel worlds by invoking > >> decoherence that makes superposition hard to detect for complex > >> systems is thus analogous to the defense of creationists when they > invoke a > >> God of ever smaller gaps of things that have not yet been > fully explained. > > > > My dear, you really have lost the plot, haven't you Saibal? > > > > I'm sticking to QM, your position depends on some unproven effect that > would make pure states evolve into mixed states. > Your idea of QM is sadly flawed. The real professional quantum analysis given in the quoted paper shows how the observed effects are completely consistent with quantum mechanics. The emission of thermal radiation by the heated balls leads to a clear and evident loss of coherence. Your pseudo-analysis has nothing to do with either quantum mechanics or the actual set-up of this buckyball experiment. Bruce -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/CAFxXSLSew61Ssfj_Y8D8CY8V2KG2itfUFjqhti8wYYgfA2Fs6w%40mail.gmail.com.
