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Does spacelike separation have anything to do with non-locality?

  1. Sep 19, 2011 #1


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    The cause-effect relationship of timelike events is fairly self-evident.

    But I was wondering, do non-local effects of QM "synchronise" events that are separated along spacelike intervals? Could there be some kind of co-dependent arising, such that if event X happens in one region of the universe then event Y will certainly happen in a spacelike separated region?

    There would be no information transfer and neither event can be said to have caused the other, because obviously what caused X is what caused X and what caused Y is what caused Y. But all things come from t=0, meaning they could be fundamentally synchronised by virtue of the behaviour of spacetime in its early days.

    If things like ADS/CFT have any bearing on reality, then surely spacelike separated events aren't quite as separated as we think they are? Rather they would be perfectly coincidental.

    I have an intuition that what we think are "black holes" are actually just the "edges"/"corners" of the universe reflecting information back out. These "edges" exist dynamically in relation to spacetime geometry, explaining why they appear and disappear at convenient points.

    Everything is rapidly moving away from us, faster and faster. Somewhere along the line there will be a point of no return. The time at which this point occured depending on the geometry of our sphere of observation relative to the universe at large. The stars will fade into what we percieve as nothing. All that would remain is the causal trace of all the information present at the precise boundary where the acceleration finally overwhelmed the information supply. In the local geocentric universe, there will be just Earth, if it's still around as Earth and that would perhaps soon be ripped apart too depending on spacetime geometry at that point.
    Last edited: Sep 19, 2011
  2. jcsd
  3. Sep 20, 2011 #2


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    Nope. Quantum mechanics is fully-local. It has some effect which appear to be non-local, but all of the dynamics are fully local.
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