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Nobel prize 2022, a local theories of hidden variables are ruled out, Einstein's "spooky action at a distance" seems to be a reality.

Is there ANY explanations of this behavior of quantum objects in other theories? Maybe in string theories or LQG?

I know "shut up and calculate" and MWI explanations, but maybe... something else?

In suggested "answered" qustion I see the idea that entangled pair is a single "object". OK, but how one "end" is synchronized with other "ignoring" any distance? Maybe in other dimensions/universe/level of reality they're linked in some way, but how and what is "projected" on our spacetime, so it looks like superluminal interaction? I think (maybe that's stupid, OK) that all matter, energy and spacetime are "made" of something more fundamental and voila - no spacetime at this level of reality, so SR is unapplicable here. But I can't find something serious about a concept like this :(((

ZZ Wave
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There is no known "underlying" explanation of what is happening that causes entanglement. All we really know is that the math suggests it, and that it is measured in experiment. The rest is basically a mystery. No theory more fundamental than quantum mechanics offers any different explanation.

All bets are off for the future though. Maybe a deeper theory will eventually offer some explanation. Or maybe it will be just as unintuitive and far-removed from our everyday experience.

spinachflakes
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The mechanism is that if $V$ and $W$ are vector spaces of dimension greater than 1, then then not every element of $V\otimes W$ is of the form $v\otimes w$. Once you've bought into the basic structure of quantum mechanics, this compels you to believe that there are entangled states. To ask for anything beyond that is like asking for the "mechanism" behind the fact that if you combine a pile of five stones with a pile of three stones, you'll have a pile of eight stones. The answer is that the math compels it, and that's enough.

WillO
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