Tunnelling in Dante's Inferno

@article{Furuuchi2017TunnellingID,
  title={Tunnelling in Dante's Inferno},
  author={Kazuyuki Furuuchi and Marcus Sperling},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2017},
  volume={2017},
  pages={055 - 055}
}
We study quantum tunnelling in Dante's Inferno model of large field inflation. Such a tunnelling process, which will terminate inflation, becomes problematic if the tunnelling rate is rapid compared to the Hubble time scale at the time of inflation. Consequently, we constrain the parameter space of Dante's Inferno model by demanding a suppressed tunnelling rate during inflation. The constraints are derived and explicit numerical bounds are provided for representative examples. Our… 
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