• Corpus ID: 119298623

Eternal Inflation is"Expensive"

@inproceedings{LMersiniHoughton2007EternalII,
  title={Eternal Inflation is"Expensive"},
  author={L.Mersini-Houghton and L.Parker},
  year={2007}
}
The discovery of the string theory landscape has recently brought attention to the eternal nature of inflation. In contrast to the common belief that eternal inflation may be a generic feature of most inflationary models, in this note we argue that the suppressed amplitude of perturbations due to adiabatic regularization, together with a fine-tuning constraint on the equation of state of the rare inflating pockets with large fluctuations, render eternal inflation expensive in energy and may… 

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