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Article #4843Re: Error in NO FTL Signal Proofs exposed.
From: MRG3
Date: Thu, 12 Nov 1992 13:29
Date: Thu, 12 Nov 1992 13:29
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In article <BxJ3Fz.CKK@well.sf.ca.us>, sarfatti@well.sf.ca.us (Jack Sarfatti) says: > >Trivial, but false, formal proof that quantum connection communication is >impossible. > >Nonlocal joint probability that receiver photon b counted in + channel and >twin transmitter photon counted in phi channel is > >p(b+|a,phi) = <a,b| |+><+| |phi><phi| |a,b> > ....... >1) |a,b> can have a parametric dependence on phi so that it is >mathematically incorrect to use the completeness relation in isolation. So >that it does not cancel out of the problem destroying the controllable >nonlocal coherence effect. For the case of the spin entangled system, Sarfatti is saying that the initial conditions |a,b> of the spin system depend upon what the observer at one side of an EPR type experiment cchooses to measure. The effect of the measuring apparatus on the system which produces the correlated photon system still propogates at the speed of light or less. Hence no effect could be seen outside of the future light cone of the event "choose to measure phi". Hence any effect of this sort is due to luminal or subluminal transmission of information via interaction between one of the detectors and the coorelated photon source. I believe it was Paul Budnik who has pointed out that these type of effects may still not be ruled out in the actual Aspect experiments. There are NOT an indication of superluminal signaling capability. -mike gallis freelance physicist (for hire?)
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Path: arc1-ca.pugleaf.net!sparky!uunet!zaphod.mps.ohio-state.edu!cs.utexas.edu!qt.cs.utexas.edu!yale.edu!spool.mu.edu!hri.com!noc.near.net!nic.umass.edu!news.mtholyoke.edu!news.byu.edu!yvax.byu.edu!cunyvm!psuvm!mrg3 From: MRG3@psuvm.psu.edu Newsgroups: sci.physics Subject: Re: Error in NO FTL Signal Proofs exposed. Message-ID: <92317.082912MRG3@psuvm.psu.edu> Date: 12 Nov 92 13:29:12 GMT References: <BxJ3Fz.CKK@well.sf.ca.us> Organization: Penn State University Lines: 34