On Wed, Dec 18, 2024 at 5:32 PM Brent Meeker <[email protected]> wrote:
* There seems to be an ambiguity in "one and only one state". In the > experiment there is a single Hilbert space vector describing a neutron > which travels both paths. So does "one and only one state" really mean one > and only one classical state?* > *If an object can be in more than one state at the same time then obviously that object cannot be a classical object. And since, as far as we know, everything can be put into more than one state at the same time, reality can not be classical. * *John K Clark See what's on my new list at Extropolis <https://groups.google.com/g/extropolis>* efp On 12/18/2024 11:45 AM, John Clark wrote: > > Incidentally, if we're interested in reality, wondering if an object was > in one and only one state before it was measured, then we should really be > talking about the Leggett-Garg Inequality not Bell because it's a > generalization of Bell's Inequality that was specifically designed to test > reality. Very recently experimenters have found that like Bell Leggett-Garg > is also violated. I wrote about that back in July and I repeat it now: > ===== > > * Reality says that a macroscopic object exists in one and only one state > regardless of if it has been observed or not. **In 1985 Anthony Leggett > and Anupam Garg published an inequality that MUST be less than or equal to > 1 if reality was true. It's similar to Bell's Inequality but Bell was about > the relationship between two entangled particles, but Leggett-Garg is about > if a microscopic object can be in more than one state at the same instant > in time. * > > *In the June 24, 2024 issue of the journal Physical Review Letters, > physicists tested the Leggett-Garg Inequality in an experiment with neutron > beams, and they got a value of 1.20 +- 0.007. That is larger than 1. The > Leggett-Garg inequality is violated. Reality is untrue.* > > *Violation of a Leggett-Garg Inequality Using Ideal Negative Measurements > in Neutron Interferometry* > <https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.132.260201> > > *In their experiment they generated an intense neutron beam and then, > using a perfect silicon crystal, they split it into two beams several > centimeters apart. Then, using another crystal, the two beams are > re-combine back in the one beam and then hit the detector. Each beam is > made up of many millions of neutrons and thus is huge by quantum > standards, and there are two ways the neutrons can travel from the source > to the detector. * > > *The lead researcher says "The idea that maybe the neutron is only > traveling on one of the two paths, we just don’t know which one” has thus > been refuted." Mathematically there is simply no way the behavior of those > neutrons can be explained by any conceivable macroscopically realistic > theory.* > > *Incidentally, Many Worlds is NOT a realistic theory.* > > > trn > > > -- 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 view this discussion visit https://groups.google.com/d/msgid/everything-list/CAJPayv2fL15TT6Y9-_yGTbvFQ4A4HGLDErhCac4b68G23mtx1w%40mail.gmail.com.
