One Bubble to Rule Them All

@article{Hartle2016OneBT,
  title={One Bubble to Rule Them All},
  author={James B. Hartle and Thomas Hertog},
  journal={arXiv: High Energy Physics - Theory},
  year={2016}
}
We apply the principles of quantum mechanics and quantum cosmology to predict probabilities for our local observations of a universe undergoing false vacuum eternal inflation. At a sufficiently fine-grained level, histories of the universe describe a mosaic of bubble universes separated by inflationary regions. We show that predictions for local observations can be obtained directly from sets of much coarser grained histories which only follow a single bubble. These coarse-grained histories… 

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