Quantum entanglement explain

  • Needs a date

  • Needs a location

  • I think would be nice to have dedicated talk about that phenomena. I would imagine that as more in detailed explain without unneeded equations, how to get from EPR to Bell explain of paradox tracking whole history from paradox through idea to proven theory and experiments. It's should answer questions about what are real consequences of entanglement for physics and where myth start mixing with facts.
    IMHO this could be useful to make lot of talk on meetup more consistent and clear. Cause subject definitely touching philosophy, hopefully with good delivery, many people should find something interesting.
    I would be happy to help with that topic as much as I can.

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  • A former member
    A former member

    Hope it's OK if I join the group. I'm not a London resident, but if all goes well I'll be spending some time there soon. In the meantime, if any of you who are studying entanglement have any light to shed on entangled states with "no correlations" please comment:

    http://www.meetup.com/Relativity-Exploration-of-Portland/messages/boards/thread/48612268

    January 4

  • John B.

    I'm in!

    1 · September 20

  • Kim

    Hi,

    I have a venue in central london (inbetween Liverpool St. and Moorgate tube, EC2N area).

    Ive just come across this group - seems exactly what I've been looking for but also seems inactive.

    The venue above is an office building with a large auditoria which fits over 100 people. However, we have to pay staff and security (around £56). Ifwe have enough people wanting to do this, im happy to proceed with organisingbut it may mean starting a separate meetup group with similar theme and keepjng it active. If 20 pple attend, cos per attendee is £2.80 to cover room costs. The venue is open evenings only after work, around 6.30pm omnwards.

    Would love to hear your thoughts on this.

    K

    August 18, 2014

  • Jane B.

    James Khan, you stepped up as organiser of this group a couple of months ago but despite 3 events with 18 ,19 and 17 people waiting we only see you organising Yoga retreats for profit. You have 54 people waiting for you to organise the 3 events. If you are not going to make this happen soon please let us know and/or promote a member to organise events on the theme of this group.

    5 · April 25, 2014

  • lan B.

    Sue, this message got garbled by the ultra-low IQ, idiot Meetup software, which only allows short snippety sentences and then abruptly DESTROYS one's laboriously composed postings without warning if they are just ONE character "too long" (!)

    However, I have begun a new thread titled: "Nonlocality, entanglement and the superposition principle" , at which location it seems that the software HAS, after all, capriciously decided to retain the fullness of my posting virgo intacta! If I've expressed myself in any way which you or anyone else might find unclear, then please don't hesitate to ask for clarification.

    Best wishes Ian

    1 · March 25, 2014

  • lan B.

    I was unaware of this group's existence until I got the email notification this afternoon. I have however met Terence Freedman once or twice, and Martin Thomas several times. ("Over on" the now-moribund "Quantum Mechanics, Cosmology and Consciousness" Meetup Group.) Look, I think that since Clauser, Horne, Shimony and Holt (1977) and particular since the statistically more refined results began coming in from the early '80s via the work done by various incarnations of Alain Aspect's team, enough water should have flowed under the bridge to appreciate that quantum non-locality is an empirical truth, and not merely an artefact of poorly understood theory, and is therefore here to stay.

    March 25, 2014

  • lan B.

    [ .. Continued .. ]

    We know simply from special relativity that it is legitimate to speak of "timelike connections", these being constituted simply either by some object's or system's PERSISTENCE IN TIME (i.e., "ageing"). in the case of any INTERSECTION of worldlines, we then obtain, of course, "causality" (thus quelling HUME's philosophical misgivings). Quantum theoretician Sandu Popescu has intelligently speculated that the PHENOMENOLOGICAL probabilities with which we are presented on the occasions on which physicists perform quantum measurements are in fact due to the realignment of such spacelike-distributed entanglements, ..

    March 25, 2014

  • lan B.

    [ .. Continued .. ]

    .. with there being no in-principle limit to the distances over which such physically real associations can operate! This proposal has the interesting consequence that strict causality HAS BEEN "defeated", yet the reason is NOT due to "sheer randomness", since there ARE indeed nomic constraints. The only problem is that any time some measurement IS made, these entanglements are irretrievably destroyed, thus rendering the situatuin as-near-as-dammit "probabilistic"!

    SR (and GR) interpret the conditional present which lies outside the causal horizon of any chosen frame of reference as purely descriptive, but "unphysical". Ironically, it was the experimental proof of nonlocality which conferred actual physical "substance" to the proposal. Quantum systems DO become "entangled", and such entanglement is simply a manifestation of the superposition principle at a remote distance.

    March 25, 2014

  • lan B.

    [ .. Continued .. ]

    I think that this leaves the door open to the physics community and philosophers of physics to regard ALL the bizarre phenomena encountered within QM as being exemplifications the principle that QUANTUM MECHANICS IS ABOUT THE STRUCTURE OF PHYSICAL RELATIONS ACROSS SOME INSTANTANEOUS TIME-SLICE INDEXED TO SOME SPECIFIC FRAME OF REFERENCE CONSTITUTED BY THE INTERACTION OF AT LEAST 2 "QUANTUM ACTORS" SOMETIME DURING THEIR JOINT PAST. Then why don't we SEE such non-local entanglements within "classical" physics? Well, quantum systems are as it were highly "gregarious", readily swapping partners like attendees at some square dance, and so, since within both the biological world in general and our terrestrial/astronomical experience in particular we are firmly within the domain of "condensed matter systems",

    March 25, 2014

  • lan B.

    [ Continued .. ]

    it follows that the evolution of almost ALL quantum systems which we are (indirectly!) likely to encounter becomes extraordinarily rapidly curtailed by the onset of DECOHERENCE. (I.e., by the destruction of "old" entanglements and their replacement by newly-formed ones.) I therefore venture to suggest that we were not "theoretically aware" of the prospect of actual non-locality until the early 1930s -- and not "experimentally aware" until of course around 1980 -- simply because our dense local environment was/is CONTINUALLY DESTROYING THE EVIDENCE! ( .. And, I would further suggest, it is THIS effect which is responsible for the existence of "matter": QM is ESSENTIALLY concerned with radiation-like effects. Even the electron orbitals are as it were "bound states" of radiation confined by (a classical gloss here!) "a central field of force". (The atomic nucleus.)

    Comments, anyone?

    1 · March 25, 2014

  • Sue L.

    hey, i'm new, would like to know if this is still going ahead, if so please advise time/date and location? thanks! Sue :)

    1 · March 18, 2014

    • Jane B.

      I think someone will have to step up to organise it otherwise looks like it won't happen. I know of a venue in Islington and also in Bethnal Green - both £20 ph (people pay at the door to cover the cost) if anyone wants to step up and take it from here??

      1 · March 18, 2014

  • terence f.

    same as before date (long notice) and place critical

    March 5, 2014

  • Malcolm S.

    I already have a way to get from EPR to Bell!
    Bell says that either our understanding of QM (and of entanglement in particular) is wrong, or else one of: At a distance, or Action, or Spooky is a problem.

    That is: our understanding of Relativity, our understanding of Objective Physics, or our understanding of Conscious Decision making (the ghost in the machine).

    March 5, 2014

  • Jane B.

    Maria - if you don't have a venue, I know of one in Islington.

    March 4, 2014

  • A former member
    A former member

    That sound slike a great theme - an important concept to grasp.

    February 5, 2011

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