question about the universe

I have a few questions about the universe.

If the universe exists as a 'bubble' in a field of other 'bubble' universes,as sometimes proposed in scientific tv shows,then what universe do these 'bubbles' exist in?
Why would the fission or fusion of the bubble cause what we observe as the Big Bang?
What are the physics involved at that level?

#Physics #Space #Science #Opinions

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Comments

1.You were not clear for me about your question.

3.Astrophysics and quantum physics, I think.

2.I think what you asked does not make any sense, because universe, according to the Big Bang theory (not the tv series), was originated in a collision of two infinitely dense "kind of" particles. In due course of the collision, the energy liberated was such that created a minor version of the universe we know today, being expanding as the clock tickles.

Leonardo Cidrão - 7 years, 10 months ago

Sorry about that.I meant,if the universe exists as a 'bubble' in a field of other 'bubble' universes,as sometimes proposed in scientific tv shows,then what universe do these 'bubbles' exist in?The second question is from the same theory,which proposes that the Big Bang was actually the fission or fusion of these 'bubbles'.

Tan Li Xuan - 7 years, 10 months ago

Ohh I got what you meant. You are saying that if "our" universe possibly cohexists with other universes, where are they cohexisting ( placed in) ? That's an interesting question. Actually, I have thought about that before, like "what did exist before the big bang? Where those dense particles come from?" Unfortunately, I can't give you an answer because I indeed don't have one. All I can imagine is a huge blank space, like somewhere which has absolutely nothing.

Leonardo Cidrão - 7 years, 10 months ago

Tan,

Good questions!

The notion of "universe" as a container for the actual world we live in is a logical fallacy. We think of space and time, at least in the framework of relativity, as some surface, or sheet. In the standard pictures you see online, like here the sheet is "embedded" in 3-dimensional space. However, as it turns out, one does not need the notion of embedding to fully describe the geometry and behavior of the sheet. One can describe the geometry and behavior of the sheet using solely quantities intrinsic to the sheet itself, without reference to some external space. Hence there is no universe these bubbles live 'in' - the bubbles are the entire universe itself! One common name for this 'universe of bubbles' is multiverse.
Where did you read this?
To understand the dynamics and behavior of big bubbles you need general relativity and quantum field theory (quantum mechanics of fields, like light), To look for signatures of bubbles, you need good astronomy, in particular people look for signatures of bubbles in the cosmic microwave background. To construct a theory of how such bubbles came to be, you're pretty much in the realm of a unified theory with quantum gravity.

Please note that all of these ideas are theoretical - serious people think about them, but to date there is no experimental evidence we live in such a multiverse.

David Mattingly Staff - 7 years, 10 months ago

I watched it on a short movie,The Universe in a Nutshell featuring Michio Kaku.Thanks for the info!

Tan Li Xuan - 7 years, 10 months ago

Math	Appears as
Remember to wrap math in `\(` ... `\)` or `\[` ... `\]` to ensure proper formatting.
`2 \times 3`	$2 \times 3$
`2^{34}`	$2^{34}$
`a_{i-1}`	$a_{i-1}$
`\frac{2}{3}`	$\frac{2}{3}$
`\sqrt{2}`	$\sqrt{2}$
`\sum_{i=1}^3`	$\sum_{i=1}^3$
`\sin \theta`	$\sin \theta$
`\boxed{123}`	$\boxed{123}$