Wheeler's Mutability principle and multiple universes?

[Suekdccia]

TL;DR Summary

Is there any model in theoretical physics combining Wheeler's "Principle of mutability" and multiverses?

Physicist John A Wheeler proposed the "Principle of mutability" which said that it could be the case that the universe would eventually shrink in a "Big Crunch" and the be re-born in another Big Bang. He proposed that the laws of physics (even the considered most fundamental ones) would change and therefore, between cycles, we could have completely different universes.

I find this approach very interesting and I was wondering if any physicists have further developed this model? Specifically, I was wondering if there are any physicists that have proposed that there are multiple co-existing universes, which their most "fundamental" laws (not only effective laws) would change due to Wheeler's principle of mutability. Are there any?

 

[sunrah]

I find this approach very interesting and I was wondering if any physicists have further developed this model?

The Big Crunch has been pretty much ruled out in concordance cosmology. The Perlmutter and Riess observations that the universal expansion is accelerating not slowing down (since corroborated through other observations) pretty much did it in.

FYI you might want to check out Penrose's successor theory of conformal cyclic cosmology. It is all highly speculative, though I would say ΛCDM rests on a couple massive assumptions.

 

[Jorrie]

The Big Crunch has been pretty much ruled out in concordance cosmology. The Perlmutter and Riess observations that the universal expansion is accelerating not slowing down (since corroborated through other observations) pretty much did it in.

FYI you might want to check out Penrose's successor theory of conformal cyclic cosmology. It is all highly speculative, though I would say ΛCDM rests on a couple massive assumptions.

I would say that LCDM is solid, but it rests upon inflation, which rests on some massive assumptions...

 

[PeterDonis]

LCDM is solid, but it rests upon inflation

I don't think that is the case. The LCDM model, by itself, does not claim that inflation is what came before the Big Bang (the hot, dense, rapidly expanding state that is the earliest state of the universe for which we have good evidence). That claim is an extension to the LCDM model, and not the only possible one.

 

[Jorrie]

Yea, I suppose it may be better to say that LCDM modeling is solid, but its original hot, dense, low entropy origin is not, due to many competing models.