On Tuesday, June 5, 2018 at 1:18:29 AM UTC, Bruce wrote: > > From: <[email protected] <javascript:>> > > > Remember that the analysis I have given above is schematic, representing > the general progression of unitary evolution. It is not specific to any > particular case, or any particular number of possible outcomes for the > experiment. > > Bruce > > *OK. For economy we can write, ** (|+>|e+> + |->|e->), where e stands > for the entire universe other than the particle whose spin is being > measured. What is the status of the interference between the terms in this > superposition? For a quantum superposition to make sense, there must be > interference between the terms in the sum. At least that's my understanding > of the quantum principle of superposition. But the universe excluding the > particle being measured seems to have no definable wave length; hence, I > don't see that this superposition makes any sense in how superposition is > applied. Would appreciate your input on this issue. TIA, AG* > > > A superposition is just a sum of vectors in Hilbert space. If these > vectors are orthogonal there is no interference between them. Your quest > for a wavelength in every superposition is the wrong way to look at things. > Macroscopic objects have vanishingly small deBroglie wavelengths, but the > can still be represented as vectors in a HIlbert space, so can still form > superpositions. I think you are looking for absolute classicality in > quantum phenomena -- that is impossible, by definition. > > Bruce >
*If that's the case, why all the fuss about Schrodinger's cat? AG * -- 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.
