Is Penrose's Cyclic Cosmology Model Only Applicable on a Local Scale?

In summary, a recent thread on Penrose's proposal of cyclic cosmology was closed due to lack of acceptable sourcing. However, there is a summary of conformal cyclic cosmology and earlier references available on arxiv. Two previous threads on CCC were also mentioned, with brief discussions on the topic. A new member is interested in the CCC model and the concentric rings visible in the CMB, and has asked if anyone has proposed a mechanism for their generation. Another question was raised about the possibility of the CCC model being correct on a local scale but not for the entire universe.
  • #1
PAllen
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While I am skeptical of this, it is a serious proposal that has not been discussed recently on PF.
A recent thread asked about Penrose's proposal on cyclic cosmology. It was closed due to lack of any remotely acceptable sourcing, even after prompting. Much of the original professional publication on this is not available on arxiv. However the following includes a summary of conformal cyclic cosmology and earlier references (that are not readily available online):

https://arxiv.org/abs/1808.01740

On this basis, if anyone wants to discuss the current plausibility of this model, this thread can be a suitable basis.
 
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  • #4
I am new to Physics forum and am interested in the CCC model. I am particularly interested in the concentric rings visible in the CMB. Has anyone proposed a mechanism for the generation of these rings?
 
  • #6
Hi again guys. Has anyone proposed that the CCC model may be correct in application by wrong in scale? What I mean is that the CCC model is true for the local volume of space time but not true for the entire universe? The concentric circles in the CMB may have a more mundane origin?
 

Related to Is Penrose's Cyclic Cosmology Model Only Applicable on a Local Scale?

What is Penrose's Cyclic Cosmology Model?

Penrose's Cyclic Cosmology Model, also known as Conformal Cyclic Cosmology (CCC), is a theory proposed by physicist Roger Penrose. It suggests that the universe undergoes infinite cycles of Big Bangs and expansions. Each cycle, or "aeon," begins with a Big Bang and ends in a state where the universe is so expanded and dilute that it resembles the conditions of the Big Bang, thus initiating a new cycle.

Is Penrose's Cyclic Cosmology Model widely accepted in the scientific community?

Penrose's Cyclic Cosmology Model is a fascinating and innovative concept, but it is not widely accepted in the scientific community. It remains a speculative theory and is one of several competing models that attempt to explain the origins and ultimate fate of the universe. More empirical evidence and theoretical development are needed to evaluate its validity fully.

Does Penrose's Cyclic Cosmology Model explain local cosmic phenomena?

Penrose's Cyclic Cosmology Model primarily addresses the large-scale structure and ultimate fate of the universe, rather than specific local cosmic phenomena. However, it does have implications for local phenomena in the sense that it proposes a recurring cycle of cosmic events. Still, the model is not specifically designed to explain local events like galaxy formation or star behavior in detail.

Can Penrose's Cyclic Cosmology Model be tested or observed?

Testing Penrose's Cyclic Cosmology Model is challenging due to the vast timescales involved. However, Penrose and his collaborators have suggested that certain patterns in the Cosmic Microwave Background (CMB) radiation could provide evidence for the model. These patterns, called "Hawking points," are theorized to be remnants from previous aeons. Some preliminary data has been interpreted to support this, but it remains a contentious and debated topic.

Is Penrose's Cyclic Cosmology Model only applicable on a local scale?

No, Penrose's Cyclic Cosmology Model is not only applicable on a local scale; it is a cosmological model that addresses the entire universe. It proposes a framework for understanding the universe's large-scale structure and its cyclical nature through infinite aeons. While it has implications for local phenomena, its primary focus is on the global, rather than local, characteristics of the cosmos.

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