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- Newsgroups: sci.physics
- Path: sparky!uunet!europa.eng.gtefsd.com!emory!gatech!hubcap!ncrcae!ncrhub2!ncrgw2!psinntp!scylla!daryl
- From: daryl@oracorp.com (Daryl McCullough)
- Subject: Re: hidden variables
- Message-ID: <1993Jan28.154929.2335@oracorp.com>
- Organization: ORA Corporation
- Date: Thu, 28 Jan 1993 15:49:29 GMT
- Lines: 27
-
- Paul Budnik writes:
-
- >On the contrary I think it helps to illustrate why you have to invoke
- >collapse. A non Lorentz invariant wave function cannot be derived within
- >QM. The only mechanism QM provides for deriving violations of locality
- >involve collapsing the wave function to be consistent with an observation
- >at one site and then using this collapsed function to compute the
- >probability of detection at the other site.
- >
- >Paul Budnik
-
- Paul, that just isn't true. As discussed by Bell in _Speakable and
- Unspeakable in Quantum Mechanics_, Schrodinger's equation can be
- interpreted as a combination of (1) a continuity equation for
- probability density, plus (2) a pseudo-Newtonian equation of motion
- that uses nonlocal potentials. This is what Bell calls the
- Bohm-DeBroglie pilot wave theory. It is equivalent to Schrodinger's
- equation, but it is nonlocal. Therefore, you are wrong that a nonlocal
- equation cannot be derived from Schrodinger's equation.
-
- Secondly, you are wrong that the evolution of the wave function is
- local. It is local in *configuration* space, but it is not local in
- physical space in the case of more than one particle.
-
- Daryl McCullough
- ORA Corp.
- Ithaca, NY
-