On Sunday, September 15, 2019 at 9:50:18 AM UTC-5, John Clark wrote: > > On Sat, Sep 14, 2019 at 7:18 PM Lawrence Crowell <goldenfield...@gmail.com > <javascript:>> wrote: > > >>The Schrodinger wave equation says the ticket is printed in every >>> possible way and the winning number is picked in every possible way, but >>> that's not all you yourself are also a quantum object so you interact with >>> the ticket in every possible way. Some interactions result in great wealth, >>> some result in no profit, and some result in oblivion as in the suicide >>> scenario. >>> >> >> > The Schödinger equation says nothing of the sort. >> > > It says when an electron moves from point A to point B it can do so by any > path, although some paths are more likely than others. >
Technically there is no electron on a path. These paths are calculation devices and their ontological status is uncertain. > > >> > It is not a Charlie Parker "anything goes" system. It just tells how >> probability amplitudes that define a state or wave in a Fourier sum evolves >> with time. [...] It would be argued there are some MWI splittings that >> may play a role in determining the lottery number on the winning ticket, >> but there is no way this can at all be localized or identified. >> > > > The Schödinger Equation says the wave function is a direct > representation of reality, and the Many World's people say that too, they > say that's all that is needed. I admit it doesn't seem that way because > when we observe an electron hitting a photographic plate we don't see a > wave function and we don't see a large blob we see a small localized spot > at a definite place. So some people concluded that Schödinger's Equation > wasn't enough and they tacked on a lot of extra stuff about it collapsing > when a observation is made, something the equation itself doesn't even hint > at. Many Worlds says the extra stuff is unnecessary and Schödinger's > Equation is all that is needed. > > When you observe a electron, in other words when you become entangled with > the electron, in still other words when both you and the electron have the > same quantum wave function, there is a connection between the "you "system > and the "electron" system. That combined you-electron system obeys > Schödinger's Equation and the system smoothly evolves into a entangled > state, a superposition of every place the electron could have been and you > observing the electron at that location. > > But rather than say the combined you-electron system having evolved into a > superposition of all possible states Many World's says it evolves into > every possible observer. We don't end up with one observer who has many > ideas where the electron was seen, instead we end up with many worlds each > with an observer in it with a single definite idea of where the electron > was seen. > > >> > As for below the Wheeler Delayed Choice experiment in the MWI setting >> a measurement of whether the electron went through a slit is performed >> after it has passed. >> > > Many Worlds can explain delayed choice without invoking backward > causality. > My point is not to argue for some retrocausality, for that is ruled out by the non-signalling theorem. My point is with the ambiguity with where states are localized. The measurement is some entanglement of a system with a large number of quantum modes with a system that has few modes or degrees of freedom. The elementary approach is to assign some measurement state or needle state. But really the entanglement is far more complex and it is a partial entanglement that spreads through many other states that compose the measurement system or reservoir. LC > The photon hits a half silvered mirror so 50% of the time the photon > takes path A and 50% of the time it takes path B. At the end of each path > is a detector which destroys the photon and sends the information on which > path the photon took to a physical memory system of some sort that, just > like everything else, must obey Schödinger's Equation. > > Many Worlds says if there is a change the universe splits and in this case > the only difference is a change in the physical memory, in one universe > the memory is it going through path A and the other it remembers it going > throughpath B. But if you then use quantum erasure then the physical state > of the memory is no longer different, they are in the exact same state, > so there is no longer any difference between the 2 universes, so they > merge back together. But now the single universe seems to have indications > the photon followed path A only and indications it followed path B only and > this can cause interference bands. > > John K Clark > -- 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 everything-list+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/everything-list/50bb6fd8-94b5-4b7d-b731-01d4165e8edb%40googlegroups.com.
