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Locality & Determinism beneath the quantum surface? 
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#1
May211, 06:33 PM

P: 172

It seems everyone think that Bell Inequalities rules out any hope of ever getting a local and deterministic account of reality.
This need not be so... Gerard 't Hooft (Nobel Prize winner of 1999) has been working on a theory that may explain the quantum behaviour in a classical way. Layman link: http://sdsuphysics.org/physics180/p..._freewill.html Technical link: http://arxiv.org/PS_cache/quantph/p.../0604008v2.pdf 


#2
May211, 07:51 PM

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P: 8,470

Where does it say his model is a local one?
Edit: this wikipedia article does say at the bottom that he is interested in finding a local model by exploiting the superdeterminism loophole (though I am not sure that your links actually concerns such a model), which I think is equivalent to the "noconspiracy assumption" which is always mentioned in any rigorous proof of Bell's theorem (for example, see section D on p.6 of this proof). A violation of this condition is logically possible but would be physically bizarre, it would mean for example that if an experimenter chose on a whim each day whether to have cereal, pancakes or an omelet for breakfast, and on each day used this seemingly random choice to decide which detector setting to use for a particle which had been in flight for exactly a year, then one year earlier the laws of physics must have behaved as if they were "choosing" what hidden variables to assign to the particle based on what the experimenter would decide to have for breakfast one year later. 


#3
May211, 08:11 PM

P: 172

He mentions locality in this article:
http://star.tau.ac.il/~eshel/Bio_com...oftHidden.htm 


#4
May211, 08:19 PM

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P: 8,470

Locality & Determinism beneath the quantum surface?



#5
May211, 08:40 PM

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#6
May211, 08:58 PM

P: 172

I'm not sure, but perhaps this will shed some light on the situation:
http://arxiv.org/PS_cache/arxiv/pdf/...908.3408v1.pdf 


#7
May311, 12:18 AM

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PF Gold
P: 5,373

Just as Bell demonstrated that realism leads to testable requirements, a serious theory of superdeterminism will do the same. In essence, this would require every particle to contain all information about all particles everywhere. Howsa 'bout something that actually explains or predicts something? 


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