> > > > > > > > > > > > If two events are space-like separated, I think it's correct > > > to say there is no causal ordering. However, when analyzing time reversal > > > for measurements -- whether or not it exists in QM -- aren't we dealing > > > with time-like ordering in the laboratory wherein the "first" measurement > > > occurred? AG > > > > > > > > > > Frankly I do not think there is a "first" measurement and a > > "second" measurement, in case of entangled space-like separated parties. > > > > > > Right. But isn't there a measurement, and THEN its hypothetical reversal; > that is, the attempt to reconstruct its wf by going backward in time? How > does space-like separated get into the act? AG >
A bit difficult for me. Tentatively, I would say that if temporal ordering between measurements of two (let us say space-like) entangled parties is indefinite, also temporal ordering between hypothetical reversal of measurements of two (let us say space-like) entangled parties is indefinite. I can imagine another option. The equivalence between non-locality (non-separability) and retro-causality. -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/d/optout.
