Emoryal said:
This is actually the opposite of the multiverse theory. It's the big bounce which tries to make the universe finite and cyclical(demonic). You don't need a beginning because it's a loop where one universe runs forward and the other is running backwards. I haven't seen a paper and the entire community will eventually evaluate the validity but this aint anything concrete.
You'd still need a 'beginning' that would set up the initial 'Universes' in order for them 'collide and rebound'.
This is just another iteration of M-theory which is, itself, speculative, but the results of which would match current data. Well, at least it did a few years ago. I thought they were waiting on some tests to see if that theory was feasible, but haven't seen anything about it being confirmed or falsified.