[ExI] Nimtz >lux redux?

scerir scerir at libero.it
Fri Aug 17 08:14:01 UTC 2007


> *Snort*. What would *he* know? 

BTW, another quantum optics expert (Franson, the
man of the Franson interferometer) came out
with an extension of an old idea of Feynman 
(short range a-causality). That is to say that 
the Feynman propagator can be larger (wider?)
than the forward light cone. This doesn't mean,
per se, the possibility of 'causal' superluminal 
signalling. Especially because both HUP and the 
lineary of QM seem to forbid causal superluminal 
signalling (at least that is the content of the 
'peaceful coexistence' principle). It might be useful 
(that propagator) for an ontology of 'entanglements' 
though.
http://www.arxiv.org/abs/0704.1468
http://www.arxiv.org/abs/0707.0475

s.

'The law of causality, I believe, like much that passes 
muster among philosophers, is a relic of a bygone age, 
surviving, like the monarchy, only because it is erroneously 
supposed to do no harm.'.
-Bertrand Russell, 'On the Notion of Cause', 1912-1913






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