Parallel Universe Anyone?

Discussion in 'Science' started by The Rhetoric of Life, Jan 28, 2019.

  1. The Rhetoric of Life

    The Rhetoric of Life Well-Known Member

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    Sub atomic particles in the world of Quantum.


    Our own timeline is made up of our own history, but consider every possibility being equally real in a parallel universe.

    I say timeline, because, to me, that's all these things are, are different timelines shared by a common point in time. Entropy dictates that in time travel, you go back, you're going back to a parallel universe because everything that ever happened in your time ever everywhere would have to happen the exact same way (which is statistically impossible according to entropy) in order for it to be your own timeline/universe you left.
     
    Last edited: Jan 28, 2019
  2. wyly

    wyly Well-Known Member

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    a multiverse maybe...interesting topic but waaaay above my grade...
     
  3. kazenatsu

    kazenatsu Well-Known Member Donor

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    Let's keep in mind that the concept of entropy is not actually one of the fundamental laws of the universe.
    Therefore you have to be bit cautious how you attempt to use it.
     
    Last edited: Jan 29, 2019
  4. kazenatsu

    kazenatsu Well-Known Member Donor

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    What if different timelines can not only branch off but also merge together?
    In fact what if timelines only branch apart on a microscopic level, because they have a tendency to cohere back to a single timeline?

    If you know anything about entanglement (it's not only confined to the dimensions of space but also applies to time), it's possible that the possibilities of timeline formation are limited to certain discrete outcomes that can later merge.

    When you're talking time travel, that could lead to some pretty weird things happening that people would ordinarily think of as impossible coincidences. One would have to understand the statistics of probability in a completely new way.

    I'm not saying a parallel existence could not exist, but it would be more like an alternate reality bubble that could only exist for a short duration.
     
    Last edited: Jan 29, 2019
  5. HereWeGoAgain

    HereWeGoAgain Well-Known Member

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    That is highly speculative at best. But it reminded me of a thought experiment a Russian Physicist once entertained. I believe it was Igor Dmitriyevich Novikov, who wrote about this.

    The thought experiment involved a time machine and a billiards table. If a ball falls in the corner pocket, it falls into a time machine. The ball emerges, or really, emerged from the side pocket a moment earlier. The goal was to determine the conditions required for the ball to knock itself off its path, thus preventing itself from ever falling into the pocket and time machine. But if it never falls into the time machine, it never could have emerged to deflect itself. But if it never deflected itself, it fell into the time machine.

    So you have a classic temporal paradox. But when he considered how you would design a practical demonstration of this - still just as a thought experiment, of course - he found that it was not possible to deflect the ball enough to miss the corner pocket. It was somehow built into the problem that a paradox was not possible to create.
     
    Last edited: Jan 30, 2019
  6. kazenatsu

    kazenatsu Well-Known Member Donor

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    Yes, and that's likely how these paradoxes are resolved—they don't exist and cannot exist.
    This isn't so bizarre to understand, we see it all the time in wave destructive interference.

    (Just to clarify, that doesn't mean you can't go back in time, theoretically)

    Of course it's also possible a unresolvable paradox could fracture reality into a localized alternate existence. That may have some implications for even going back in time in the first place because I think there would be some entanglement between the cause and the end effect, which in turn is entangled with the reality fracture. Statistically the resolution will be the easiest one.
    A reality fracture would be as difficult as the degree of entanglement is between the localized reality and a wider collection of matter.

    Perhaps this phenomena (if it exists) could be demonstrated on a smaller scale.

    Basically, in your example, the billiard ball would be required to deflect itself in the past to avoid a paradox. But the billiard ball would also have to choose another pathway as well to avoid another paradox. Basically the ball would have to choose both pathways at the same time to avoid any paradox, which would not normally be possible.
    This would go beyond the normal wave-interference effects on probability, and involve transfer of energy. In the wave-particle duality, the particle would manifest itself at two points (rather than the typical one point).
    The particle will end up coming out as if there had never been a paradox.
    Basically the two destructive points of interference would both themselves destructively interfere, negating the interference.
    (So in some sense I suppose one could see it as a sort of higher order of wave interference behavior)

    Below is a diagram to illustrate what I mean:

    timeparadox.gif

    As you can see, to avoid a paradox the ball(or whatever it is) has to simultaneously split into two, even though this is not allowed by conventional physics.
     
    Last edited: Jan 30, 2019
  7. Lonely Thinker

    Lonely Thinker Newly Registered

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    I have not spent enough time researching the topic, mostly because I find it hard to believe. But the link below is worth watching if your into this subject.

    D-Wave quantum computer creator predictions. I think his first prediction has already come true. The original video is from 2013.
     

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