But more like infinite number of existing universes spread out due to expansion of universes.
But even this article doesn't explain the title of the paper : “A Smooth Exit from Eternal Inflation?”
What was the exist mechanism described in this paper from eternal inflation?
https://gizmodo.com/what-you-need-to-know-about-stephen-hawking-s-final-phy-1823897314
https://gizmodo.com/what-you-need-to-know-about-stephen-hawking-s-final-phy-1823897314