A universe with one arena would be like our currently accepted consensus, Big Bang Theory. Under BBT, given that we have detected signs of accelerating expansion, our universe could expand forever. Check out one theory about that outcome, i.e. the
Big Rip. The outcome is just like Spidergoat suggested could happen to each of the other arenas. Instead of overlapping and forming new arenas, why wouldn’t they be so remote to each other that they would have the same fate as in the Big Rip theory to a final infinite disbursement of their finite amount of matter? And they could if they were so far apart that they couldn’t interact but isn’t that impossible when we are talking infinite time?
In QWC I replace BBT with a universe where our known universe is just one temporary arena in infinite space and time; there could be a potentially infinite number of arenas at any given time.
I'm thinking that there is an average energy density in the greater universe that provides enough matter and energy for these multiple arenas to be proportionally spaced to allow for the intersections and overlaps without causing endless chaos that would interfere with the generation and evolution of life. I guess that means that a new arena would need billions of years to mature before it overlaps with its nearest neighbor. It becomes a matter of what the average energy density of the universe really is. Too high, chaos and no life, too low, no intersections and no new arenas. Everything dies.
But in QWC each arena will have a life cycle long enough for life, and they will be close enough to keep the Big Rip from happening. They form from the intersection of two arenas, galactic matter from each collapses around a center for gravity to form a crunch, and the crunch bursts into expansion when a finite amount of material is accumulated. That new arena will expand and form galaxies that will all be moving away from each other. Except for the portions of an arena that get caught up in a subsequent big crunch out there somewhere, they will just expand away, burn out, disburse, etc. and become part of the background.
786 said:
I seriously don't get how the expansion after the crunch will not overtake those arenas…
786, if you don’t see what keeps the newly expanding arena from overtaking the remnants of the parent arenas as they expand I’ll give you my thinking. You are not questioning the possibility of there being other big bangs and therefore other arenas out there, it is just that you think it wouldn’t work the way I have them intersecting and forming new arenas that themselves bang and expand. You are thinking that the bursting new arena would immediately (or too soon for comfort) run into interference from the remaining debris from the parents that escaped the big crunch?
My graphics aren't very good but the second one shows that the galaxies of the parents don’t all get caught up in the new crunch. I’m thinking that when the crunch forms, matter from the parents is compressed in the new big crunch until it ceases to function as matter. In my view matter is composed of energy in quantum increments and those quantum increments need a certain tiny space in order to function. When the crunch compresses matter in its core to such small space, there isn’t enough space for matter to function. I see gravity as a function of matter and when matter stops functioning, gravity stops working.
Now this doesn’t happen overnight. The crunch forms slowly and there is about half of the galaxies in each parent that will never get compressed in the crunch. Those safe galaxies still have the momentum that keeps them moving away. If the crunch is forming in the overlap, many of the safe galaxies will continue to move away from the crunch even before the gravity of the crunch starts to diminish due to the idea of matter ceasing to function and gravity ceasing as a result. But when the gravity of the crunch does begin to decline, the inertial connection to the remaining galaxies of the parents diminishes as well and they are set free from the gravity of the crunch. They move away. Under this scenario, by the time the crunch is mature enough to burst the safe galaxies will have distanced themselves from the overlap space.
But in addition, the overlap space is very large compared to the size of the crunch. The overlap space becomes a huge low density patch of relatively empty space with an extremely small and extremely dense crunch in the middle. What if the tiny crunch was surrounded by billions of light years of mostly empty space by the time it bursts because it has swept up the galactic material from the overlap space and because the safe galaxies have expanded away from the overlap space at an accelerating rate of expansion?
My view is that the burst of the new big crunch will just be playing catch up with those safe galaxies from the two parents.