How can the big bang allow infinate universes

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In summary, the conversation discusses the concept of parallel universes and the various theories and interpretations surrounding it, including the big bang theory and the many worlds interpretation. The discussion also touches on the idea of an infinite universe and how it could be possible, as well as the concept of eternal inflation and the possibility of an infinite number of universes. The conversation ends with a suggestion to look into further research on the topic, such as the theory of eternal chaotic inflation.
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yup790
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For my physics teacher I had to reaserch and wriet about parrallel universes. I understand the many big bng theory and the many worlds interpretation for universes.

However, i don't understand how a big bang can allow an infinate universe. If there was a starting point at the universe exapnd at a non-infinate speed then how can it be infinate in size. I understand that from each point there is a different observable universe as, as I believe, the universe loops around itself like the surface of Earth does - ish.

Please help
 
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There was no starting point in space, just a starting point in time. If the universe is infinite in size, it has been infinite all the time.
the universe loops around itself like the surface of Earth does - ish.
That could be true - we don't know. In that case, the universe would be finite but without boundary, just like the surface of earth.
 
  • #3
There might not only be an infinite universe, but an infinite number of them!

Basically the trick was to think of an idea to explain how the universe/BB could pop out of nothing.

Once you have convinced yourself of a way that could happen then the problem would be getting the process to stop! Universes would pop up out of nothing 'all over the place'!

Hence an infinite number.

You might like to look at Eternal Inflation.
Or Linde's paper Eternal Chaotic Inflation
It is shown that the evolution of the universe in the chaotic inflation scenario has no end and may have no beginning. According to this scenario, the universe consists of an exponentially large number of different mini-universes inside which all possible metastable vacuum states and all possible types of compactifications are realized.

I hope this helps,
Garth
 

FAQ: How can the big bang allow infinate universes

How can the big bang theory support the idea of infinite universes?

The big bang theory suggests that the universe began as a singularity, a point of infinite density and temperature. This singularity then expanded rapidly, creating the observable universe. However, the big bang theory does not explain what existed before or outside of this singularity. Some theories propose that the big bang was not a one-time event, but rather a continuous process that creates new universes constantly, thus allowing for the possibility of infinite universes.

Is there any scientific evidence for the existence of multiple universes?

Currently, there is no direct scientific evidence for the existence of multiple universes. The concept of multiple universes is still a theoretical idea that has not yet been proven or disproven. However, some theories, such as the multiverse theory, suggest that the existence of multiple universes can be inferred from observations of the universe, such as the cosmic microwave background radiation and the distribution of matter in the universe.

How does the concept of infinite universes affect the laws of physics?

The laws of physics, as we know them, are based on observations of the universe we live in. If there are indeed infinite universes, it is possible that the laws of physics may differ in each universe, depending on their initial conditions and evolutionary paths. Some theories suggest that the fundamental constants of nature, such as the speed of light and the strength of gravity, may vary in different universes.

Can we ever prove the existence of multiple universes?

Proving the existence of multiple universes is a challenging task as it requires the ability to observe and study these other universes. Currently, our technology and understanding of the universe are limited, making it difficult to directly observe and study other universes. However, with advancements in technology and theoretical physics, it is possible that we may one day find evidence to support the existence of multiple universes.

What implications does the idea of infinite universes have on our understanding of the origin of the universe?

The concept of infinite universes raises questions about the origin of the universe and the idea of a beginning. If there are infinite universes, it is possible that the universe we live in is just one of many, with no definitive beginning. This challenges our current understanding of the big bang theory and the concept of a singular origin of the universe. It also raises philosophical questions about the nature of reality and our place in the universe.

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