Is an infinite universe compatible with cyclic models?

In summary, cyclic models propose that the universe goes through cycles of expansion and contraction, known as Big Bounces. This leads to a continuous series of Big Bangs. However, this would require an infinite amount of matter to contract into a single point, which seems impossible if the universe is spatially infinite. The Big Bounce theory suggests that quantum events play a role in causing these cycles, while the universe maintains a finite density. This could potentially occur in every part of a spatially infinite universe, similar to how Big Bangs can occur everywhere.
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TheHeraclitus
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If space is flat and infinite are cyclic models possible? The answer seems intuitively no but I wonder if it's correct.
Cyclic models for reference.
I will take simple Big Bounce as an example of what I have in mind.
In Big Bounce there periods of expansion and periods of contraction which result in a never-ending series of Big Bangs. However if Universe is infinite in extent this would require infinite amount of matter would have to contract into one point but that seems impossible.
 
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The big bounce implies that quantum things cause the bounce while the universe still has finite density. That could happen everywhere in a spacially infinite universe - in the same way that a big bang can.
 
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FAQ: Is an infinite universe compatible with cyclic models?

What is the concept of an infinite universe?

The concept of an infinite universe refers to the idea that the universe has no boundaries or limits in terms of its size and expansion. This means that the universe is constantly expanding and has no end point.

What are cyclic models in relation to the universe?

Cyclic models propose that the universe goes through cycles of expansion and contraction, rather than having a single beginning and end. This theory suggests that the universe has existed for an infinite amount of time and will continue to exist in cycles.

How does an infinite universe fit into cyclic models?

An infinite universe is compatible with cyclic models because it allows for the idea of an eternal and constantly expanding universe. In cyclic models, the universe may go through cycles of contraction and expansion, but it never truly ends.

What evidence supports the idea of an infinite universe?

There is currently no definitive evidence that proves the universe is infinite. However, observations of the cosmic microwave background radiation and the large-scale structure of the universe suggest that it is at least extremely large and possibly infinite.

Are there any alternative theories to an infinite universe and cyclic models?

Yes, there are several alternative theories that attempt to explain the origin and nature of the universe. Some propose a finite universe with a beginning and end, while others suggest a multiverse with multiple universes coexisting. However, there is still much debate and research being done in this area.

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