How many universes are in the multiverse

@article{Linde2010HowMU,
  title={How many universes are in the multiverse},
  author={Andrei Linde and V. Vanchurin},
  journal={Physical Review D},
  year={2010},
  volume={81},
  pages={083525}
}
  • Andrei Linde, V. Vanchurin
  • Published 2010
  • Physics
  • Physical Review D
  • We argue that the total number of distinguishable locally Friedmann 'universes' generated by eternal inflation is proportional to the exponent of the entropy of inflationary perturbations and is limited by e{sup e3N}, where N is the number of e-folds of slow-roll posteternal inflation. For simplest models of chaotic inflation, N is approximately equal to de Sitter entropy at the end of eternal inflation; it can be exponentially large. However, not all of these universes can be observed by a… CONTINUE READING
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