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If this hypothesis is true, would it give us a way to distinguish many-worlds vs. wave function collapse? If the many "worlds" are all interacting with a single
by a_cardboard_box 3y ago
If this hypothesis is true, would it give us a way to distinguish many-worlds vs. wave function collapse? If the many "worlds" are all interacting with a single classical spacetime, we should be able to measure the gravity of other worlds, right? I'm not a physicist, but that sounds a lot like dark matter to me.
- a_cardboard_box 3y agoAnswering my own question based on Oppenheim's lecture[1]: In his theory, the stochastic interaction between quantum and classical states necessarily causes the wave function to collapse, so it is not compatible with many-worlds. Being able to measure the gravity of other quantum worlds is something predicted by semiclassical gravity, which Oppenheim calls "complete nonsense". [1] https://www.youtube.com/watch?v=sde7k3jJp5E https://www.youtube.com/watch?v=sde7k3jJp5E
- layer8 3y agoThere is no implication that the classical spacetime wouldn’t still split into branches, possibly with different variations in the stochastic effect from each other.