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
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