Re: What the Fark???
No, the [scientists] only now concluded that those [parallel] worlds interact.
I'll give it a go. IIRC from my college QM class, it goes something like this:
Quantum mechanics as we know it posits the temporary creation and destruction of paired virtual particles in what otherwise would be a void. In the middle of "empty space", a particle and its anti-particle come into existence and then annihilate each other within the time window provided by the Heisenberg Uncertainty Principle (i.e., the principle that "matter can be neither created nor destroyed" only applies outside the constraints of the Heisenberg Uncertainty Principle, which is a specific and precise, albeit extremely tiny, window that has been defined and tested experimentally). However, every now and then, a different random particle passing by interacts with one of the pair, so that the other particle from the original pair can then remain in existence outside the window. "something" can literally appear out of "nothing" but only if there is some other "something" around at just the precise random moment, otherwise the "something/nothing" duality goes on unobservably. The effect I just mentioned has been observed experimentally, IIRC.
What they are sort of saying is that, under the prior Many Worlds Theory, every time an either/or "choice" occurs, reality would branch into two realities, one for "either" and one for "or" so that both would then "exist" in parallel. Think of
Schrodinger's cat: when you open the box, suddenly there are two "worlds": one in which the cat is alive, the other in which the cat is dead, and both "worlds" continue on their merry way after that. That theory posited that each separate branch would be "unaware" of all other branches. Interesting theory, but untestable.
Now they are refining that theory to say, for that "parallel existence" to be maintained, each of the two branches would need to "repel" each other in order to maintain their individuality as separate "branches" of reality. It is that repulsive force between the two "branches" that then manifests itself as quantum phenomena in both branches.
The interesting challenge will be how to test that hypothesis.
