Inflation after false vacuum decay: Observational prospects after Planck

@article{Bousso2015InflationAF,
  title={Inflation after false vacuum decay: Observational prospects after Planck},
  author={Raphael Bousso and Daniel Harlow and Leonardo Senatore},
  journal={Physical Review D},
  year={2015},
  volume={91},
  pages={083527}
}
We assess two potential signals of the formation of our universe by the decay of a false vacuum. Negative spatial curvature is one possibility, but the window for its detection is now small. However, another possible signal is a suppression of the cosmic microwave background (CMB) power spectrum at large angles. This arises from the steepening of the effective potential as it interpolates between a flat inflationary plateau and the high barrier separating us from our parent vacuum. We… 
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