On Friday, April 6, 2018 at 2:39:35 PM UTC, Lawrence Crowell wrote: > > On Thursday, April 5, 2018 at 12:25:02 AM UTC-5, agrays...@gmail.com > wrote: >> >> Does a macro object, say a billiard ball, have a definite wave function? >> That is, does it have one in principle, even if it can't be written down? >> If one can speak of the wf of the universe, one would think individual >> macro objects would also have wf's. TIA, AG >> > > A large object is made of particles that have quantum wave functions. > Largely these cancel each other in a grand interference. This enhances the > appearance of classical or macroscopic behavior. If you can prepare the > wave functions of all the atoms in a large system so they have the same > form this can lead to quantization on the large. This happens with > Bose-Einstein condensates and similar quantum phase states --- here phase > meaning a thermodynamics type of phase, but one determined by quantum > fluctuations. > > LC >
When we have a macro object, say a ball consisting of same element throughout, and we want to construct its wf, what type or form of wf we must use? For example, for the H atom, we can treat the system quantum mechanically and find the energy levels, and/or consider the H atom as a free particle and find the wf giving the probability of its position, but what form of a wf would we use for a macro object that gets entangled with its environment? TIA, 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 everything-list+unsubscr...@googlegroups.com. To post to this group, send email to firstname.lastname@example.org. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.