On Mon, Jul 30, 2018 at 12:49 AM, <[email protected]> wrote: > > > On Monday, July 30, 2018 at 5:17:16 AM UTC, Jason wrote: >> >> >> >> On Mon, Jul 30, 2018 at 12:13 AM, Brent Meeker <[email protected]> >> wrote: >> >>> ?? Quantum computers cannot calculate anything more than classical >>> computers. There are some algorithms that allow a QC to calculate >>> something faster; but the domain and range is the same. >>> >>> So absent that reason does it follow that the wave function is merely a >>> convenient (and very accurate) tool? >>> >>> >> Tool for what? Predicting probabilities of finally measured values? >> > > *In my view, that's all a wf can do. AG* > >> aka >> What then can we say about the intermediate values and the computation >> itself? >> > > > *What intermediate values? The wf has no intermediate values; just the > eigenvalues of the eigenstates in its expansion. AG * >
The wave function has a state given by time t, and evolves deterministically through time. The intermediate values I refer to are the values of t that correspond to between when the quantum copmutation is prepared, and after the computation is completed and then measured. > > Does it exist and happen, or does the final result merely materialize >> magically like the live or dead cat? >> > > *In my view, we don't know how the final result materializes; the great > unsolved problem in QM, aka the measurement problem, or a large part of it. > But why introduce intermediate values, which IIUC the theory says don't > exist. AG * > Where does it say that? If I recall correctly, Schrodinger did not put a caveat on his equation which said it cannot be used to refer to anything that is real. Jason -- 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 post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
