On Tuesday, May 1, 2018 at 8:53:38 AM UTC, scerir wrote: > > > Il 1 maggio 2018 alle 9.40 [email protected] <javascript:> ha scritto: > > > > On Tuesday, May 1, 2018 at 6:57:14 AM UTC, scerir wrote: > > *AG: 'I suppose people will appeal to entanglement and decoherence to try > to make sense of how a measurement occurs. Nevertheless, I tend strongly > to the view that the theory is inherently irreversible; that is, TIME > IRREVERSIBLE IN PRINCIPLE If so, it implies the arrow of time has its > origin at the quantum level.'* > > #### Maybe. > > But ... since we say that there is non-separability between > (position/momentum or time/energy) entangled quantum states, can we also > say there is quantum non-separability not just *in space* (i.e. correlation > between space-like separated events) but also *in time* (there is no > *causal* ordering)? > > Are there Bell's inequalities for correlations *in time*? s. > > https://arxiv.org/abs/1712.06884 > > https://arxiv.org/abs/1708.00248 > > > *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* > As Lucretius wrote (De Rerum Natura): "Incerto tempore, incertisque loci". > > I am inclined to think there is a law of nature (a statistical law of > nature) regulating the behaviour of entangled parties. > > But I also know that the speed of quantum information (the speed of > quantum influences between entangled parties) could be (in principle!!!) >> > c. > > Following set of links is, more or less, complete. > > https://arxiv.org/abs/quant-ph/0007008 > > https://arxiv.org/abs/quant-ph/0212078 > > https://arxiv.org/abs/quant-ph/0410025 > > https://arxiv.org/abs/0808.3316 > > https://arxiv.org/abs/0903.1076 > > https://arxiv.org/abs/1110.3795 > > https://arxiv.org/abs/1210.7308 > > -serafino > > Greenberger: ”Quantum mechanics is magic! It is not black magic, but it i > s nonetheless magic!” > -- 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.
