[ExI] QT and SR

hkhenson hkhenson at rogers.com
Wed Aug 27 19:20:48 UTC 2008

At 10:47 AM 8/27/2008, Damien wrote:
>At 09:41 AM 8/27/2008 +0200, Serafino pointed to:
>>   http://arxiv.org/abs/0808.3316
>A physicist friend comments on this quote from the abstract:
>>Interestingly, quantum physics predicts an entirely different kind 
>>of cause for some correlations, named entanglement. This new kind 
>>of cause reveals itself, e.g., in correlations that violate Bell 
>>inequalities (hence cannot be described by common causes)
>"Two quick comments: 1) Entanglement is not "entirely different", in 
>that it is usually brought about by an interaction in their common 
>past; and 2) The authors seem to be unaware that entanglement is 
>also apparently possible due to interactions in their common future, 
>see <http://arxiv.org/abs/quant-ph/0205182>this paper. "
>That 2002 paper is by Zeilinger et al., and so deserves to be taken 
>seriously, I think.

I can think of a macroscopic example of entanglement.  Take a blue 
and a red marble, put in cup and shake.  In the dark put one each in 
packages and mail to far off places.  Have recipients open at the 
same time.  No matter how far apart they are, the color of the one 
far off becomes known instantly when you see the local one.


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