The idea is basically to see what happens if you make measurement and decoherence the same thing. You then need a universe with infinite entropy in order to make measurement irreversible, which they show is satisfied by the cosmological big-ol’-multiverse (a bunch of patches of space that have different laws of physics, basically) to give it its name. However, this runs into some other problems (interacting with everything in the multiverse to get infinite entropy is hard), and it’s not really necessary anyhow. But it’s a cool thought.
This is a repost. The original thread was here.
The idea is basically to see what happens if you make measurement and decoherence the same thing. You then need a universe with infinite entropy in order to make measurement irreversible, which they show is satisfied by the cosmological big-ol’-multiverse (a bunch of patches of space that have different laws of physics, basically) to give it its name. However, this runs into some other problems (interacting with everything in the multiverse to get infinite entropy is hard), and it’s not really necessary anyhow. But it’s a cool thought.
Ah, didn’t realize it was a repost. Apologies! I’ll delete.