A Paper Recommendation Request: on Formation of "Bubble" universes

[Lynch101]

TL;DR

Looking for a recommendation for a paper which outlines the formation of "Bubble" universes, in the context of inflationary cosmology and the string theory landscape.

I would like to try and get a better understanding of the process of how "bubble" universes are formed in the context of eternal inflationary cosmology and the string theory landscape. If anyone could recommend a paper (or papers) they feel is a good representation of this, it would be greatly appreciated. Papers ranging in technical difficulty would be welcomed.

I know won't understand them, off the bat, but I intend to try and break them down and search each element of them to see if I can at least improve my understanding.

 

[Lynch101]

Do any such papers exist?

 

[PeterDonis]

Do any such papers exist?

Where have you looked?

 

[Lynch101]

Where have you looked?

I've started with LLMs for explanations with references, then searched those references on google. On the basis of those explanations, I've searched iterations of various terms like "bubble nucleation", "slow roll inflation", "e-folding cosmology", "parent false vacuum", "true vacuum", "local minima cosmology", etc. and read some of the papers in the search results.

The LLMs seem to be useful, but I'll always try to verify the claims elsewhere.

An issue I have is, I can't really tell if a paper is a good outline of the formation of "bubble" universes or a more niche aspect of the theory. If someone on here were to recommend a paper, I would have more confidence in the reference.

This evening I came across Daniel Baumann's TASI Lectures on Inflation (referenced by Grok) and it seems along the lines of what I'm looking for. I'm just not sure how up to date it is. Are you familiar with those lectures?

 

[PeterDonis]

An issue I have is, I can't really tell if a paper is a good outline of the formation of "bubble" universes or a more niche aspect of the theory.

Neither can we, if you don't provide any reference to it.

If someone on here were to recommend a paper, I would have more confidence in the reference.

What about if someone on here were to give you an opinion on one or more of the papers you've already found? We could try to do that--if you would provide references to them.

This evening I came across Daniel Baumann's TASI Lectures on Inflation (referenced by Grok) and it seems along the lines of what I'm looking for. I'm just not sure how up to date it is. Are you familiar with those lectures?

No. Nor will I ever be, if you don't provide any link to them.

 

[Lynch101]

Neither can we, if you don't provide any reference to it.

That's why I was asking for a recommendation.

What about if someone on here were to give you an opinion on one or more of the papers you've already found? We could try to do that--if you would provide references to them.

I was thinking it would be more efficient *if* someone had a paper or papers they could recommend (regardless of level of difficulty).

Thank you though, I'll go back and look for a few and post them.

No. Nor will I ever be, if you don't provide any link to them.

That you are not familiar with it by name is a data point in itself. But here it is: https://arxiv.org/abs/0907.5424

 

[PeterDonis]

I was thinking it would be more efficient

Well, if you'd posted some links, you might have gotten some feedback by now. As it is, you have none. What does that tell you?

 

[PeterDonis]

here it is: https://arxiv.org/abs/0907.5424

It looks like these got published in 2012. On a quick skim, I don't see any reference anywhere to the BGV theorem, and the paper where that theorem was published is not in the list of references at the end. That tells me that these lectures are missing at least one key result in the field, which has been the subject of a fair bit of research (and we have had several PF threads on the theorem and its implications for eternal inflation models), and which is important for what you seem to be looking for.

 

[PeterDonis]

This evening I came across Daniel Baumann's TASI Lectures on Inflation (referenced by Grok) and it seems along the lines of what I'm looking for

From what I can see, again on a quick skim, these lectures don't discuss eternal inflation models at all.