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- Path: sparky!uunet!mtnmath!paul
- From: paul@mtnmath.UUCP (Paul Budnik)
- Newsgroups: sci.physics
- Subject: Re: temporally undecided states (was: hidden variables)
- Message-ID: <464@mtnmath.UUCP>
- Date: 2 Jan 93 17:22:45 GMT
- References: <31DEC199211004292@author.gsfc.nasa.gov> <1993Jan2.055743.26499@asl.dl.nec.com>
- Organization: Mountain Math Software, P. O. Box 2124, Saratoga. CA 95070
- Lines: 53
-
- In article <1993Jan2.055743.26499@asl.dl.nec.com>, terry@asl.dl.nec.com writes:
- > In article <461@mtnmath.UUCP> paul@mtnmath.UUCP (Paul Budnik) writes:
- >
- > > ... I believe there is a serious problem with the current QM model when
- > > you start asking what happens in the time domain in tests of Bell's
- > > inequality... At what time does QM predict that one will see a change in
- > > probability of joint detections as a result of changing the angles between
- > > polarizers? QM does not make a clear prediction about this.
- >
- > You are correct; QM does not (to my knowledge at least) make any statements
- > about the "timing" of such things. But more subtly, QM implies that such
- > questions have no real physical significance -- that is, they do not lead to
- > any testable predictions. If you try to "find" the order of events though
- > any kind of direct testing, poof! -- the very act of trying to force such
- > timing issues to be physically meaningful causes the events to cease to be
- > quantum in nature.
-
- The issue I am raising is not to determine the order of events. I am saying
- that to do an effective test of Bell's inequality you must directly measure
- the time between when the polarizers change angle and this influences
- the probability of joint detections. The way to do this is to record the
- times when the polarizers change and to record the sequence of detections
- at both sites. This must be repeated for a large number of trials. It is
- a technically difficult experiment because the delays will be dominated by
- the lack of synchronization between when singlet state particles are emitted
- and when the polarizer angles change. One can factor this out statistically
- to some degree, but one would like to have the particles emitted rapidly to
- minimize this effect. If they are emitted too rapidly it becomes difficult
- to distinguish joint detections from detections of two separate singlet state
- pairs of particles.
-
- In spite of these technical difficulties the experiment can be done and
- will yield some definite probability distribution for these delays.
- Quantum mechanics does *not* predict what the distribution of these delays
- are. It is an provably incomplete theory. That QM fails to predict
- these delays casts considerable doubt on its prediction that locality is
- violated. I now have a paper under review that makes this case. I am very
- interrested in any refutations of this argument.
-
- >
- > TEMPORALLY UNDECIDED QUANTUM STATES
- >[...]
-
- You and a number of physicists have gone to some trouble to concoct various
- interresting rationalizations to preserve the current framework of QM. It is
- only the assumption that the wave function changes instantaneously when an
- observation is made that needs rationalization. Nothing else in QM or
- physics violates locality. I suspect all your efforts are in vain. Nature
- has a erected a giant billboard with Bell's inequality saying:
- SOMETHING IS FISHY HERE. It is just about time to stop rationalizing and
- to start fishing.
-
- Paul Budnik
-