Submitted by Manureofhistory t3_10brkii in space
I have a lot of trouble with this idea. It seems like multiple universes would require a near infinite amount of energy to maintain itself but not only that, isn’t the idea completely unfalsifiable? I get that it works as and is sort of derived from probabilistic models but I find it unconvincing. How would we access one to test it? Through the lens of wave form collapse wouldn’t accessing another universe just collapse one into the other or something? Meaning you could never know even if you stumbled upon one?
Side tangent: I’ve mostly heard Sean Carol talk about multiple universes but compared to his other science work his multiverse concepts feel super weak. And it doesn’t help that he’s on Disney’s payroll. . .It feels like he’s just shilling for the mouse so they can filter all possible stories through known characters and thus always have guaranteed ticket sales without ever having to create anything new. (And I recognize that my disdain for this possibility also paints my willingness to accept multiple universes as valid)
Interesting_Owl_8248 t1_j4cns7o wrote
That depends on which kind of multiverse you're talking about. If we go with the quantum, then the multiverse comes about as a logical result of our observations of the behavior of subatomic particles and their ability to be in two or more different, contradictory states at the same time (such as being in two different places at the same time). Since the particles can occupy contradictory states at the same time, so too must the things they make up, like us and the universe. Since we don't see this constant variance in our observations of reality, one solution is the quantum multiverse hypothesis, allowing the variances by postulating divergent universes.
As for the infinite energy requirement, one of the possible solutions is that the calculated energy of our universe is zero. Everything balances out, so our universe's total energy is zero. And yes, you can get more zero states from a zero state.
True, as of right now the multiverse hypothesis is unfalsefiable, but that also used to apply to the theories of gravity, germs, electromagnetism, organic chemistry, cells, the speed of light, photons, evolution, all of them. As we develop that may change.