Theory of universe

[namasteski]

Hi intelligent folk,

I have been thinking about the formation of the universe and I would like to ask real life eggheads their opinion.  I'm no scientist, I'm just a minimally educated every day John Doe. Googling around suggests to me this may be a new idea. Perhaps I'm not describing it right in the search bar; so I'll describe it here at length. My questions are, is this remotely plausible? And is this a new idea? I’m working on a lot of assumptions; If what I'm about to write is ridiculously stupid, I'll write you a check for your 3m back 😉

Some assumptions:

The singularity of the big bang would contain within it all the spacetime that expanded from it.

Matter in singularity form would be evenly distributed

Space time in singularity form would be evenly distributed

Time is circular, just like the earth is a sphere.

 

Proposition:

If spacetime can be contained within a singularity, I’d like to propose the universe will eventually be consumed by a black hole; existing black holes will absorb one another to form one big black hole eventually reaching the sufficient mass to consume spacetime.

The singularity is both the end and beginning of our universe.

The big bang is emergence of spacetime and matter from the same singularity.

In singularity form both spacetime and matter would have to be evenly distributed, that causes it to emerge or ‘bang’ at the beginning of the universe as we know it.

Zooming in on the singularity from the outside (which would be a black hole near end of spacetime, with a camera that does not have to obey the laws of physics) you’d find the beginning of spacetime; the big bang; evenly distributed matter and spacetime; the total energy of the universe emerging. The matter does not collapse in on itself into a singularity again because matter and spacetime are evenly distributed in a singularity.

Edited September 5, 2019 by namasteski
Mistake

[Strange]

12 minutes ago, namasteski said:

The singularity of the big bang would contain within it all the spacetime that expanded from it.

OK. If you use general relativity (GR) to extrapolate back then that is pretty much what you get.

However, the singularity does not have a physical reality; it just shows that the theory no longer works (a bit like dividing by zero).

This is why people are looking for a quantum theory of gravity ("theory of everything"), in the hope it will provide a better explanation of the early universe.

12 minutes ago, namasteski said:

Matter in singularity form would be evenly distributed

Well, matter couldn't exist in those circumstances. Matter didn't appear in the universe until it had expanded and cooled enough to allow matter to form.

But, evenly distributed is correct. The universe has always been homogeneously full of "stuff" (matter now, a quark-gluon plasma before that, and before that: who knows). It still is, on average on large enough scales.

12 minutes ago, namasteski said:

Space time in singularity form would be evenly distributed

Not really sure what that means. But, yes, all of spacetime would have been in the singularity (if it existed!)

12 minutes ago, namasteski said:

Time is circular, just like the earth is a sphere.

Possible. Maybe.

12 minutes ago, namasteski said:

If spacetime can be contained within a singularity, I’d like to propose the universe will eventually be consumed by a black hole; existing black holes will absorb one another to form one big black hole eventually reaching the sufficient mass to consume spacetime.

That seems unlikely. As the universe continues to expand, galaxies will get further and further apart so even if every galaxy turned into a black hole (also unlikely) then you would end up with a large number of black holes moving apart.

But ...

12 minutes ago, namasteski said:

The singularity is both the end and beginning of our universe.

That is possible in the "big bounce" models that were popular in the past. In these, the expansion slows and then the universe collapses in on itself again. Possibly causing another Big Bang.

However, the current acceleration of expansion (rather the expected slowing) suggests that won't happen and a heat death of the universe is more likely.

12 minutes ago, namasteski said:

Zooming in on the singularity from the outside

Important to note that there would be no "outside". The singularity would be the entire universe.

12 minutes ago, namasteski said:

My questions are, is this remotely plausible? And is this a new idea?

It is not completely ridiculous. Parts of it correspond to some existing ideas. But it probably isn't right, either!  

Important to note that a "proper" scientific theory needs to have a mathematical model that enables it to be tested. But keep learning and thinking!

[Phi for All]

9 hours ago, namasteski said:

Time is circular, just like the earth is a sphere.

What is the consequence of this? When talking about spacetime as a coordinate system, the spatial dimensions (length, width, height) are bidirectional, meaning the degrees of freedom they represent go in both directions. The time component of spacetime is unidirectional. It only goes forward. What is the consequence of time moving forward but looping back on itself?

[beecee]

Speculation is fun, and as Strange has said, reasonable speculation overall.

Personally I have often entertained the speculative scenario that the BB is the arse end of a BH in another universe.  The important thing to remember, is that while we have no actual evidence of any speculative scenario, it remains speculative and simply hypothetical.