Renormalization of the inflationary perturbations revisited

  title={Renormalization of the inflationary perturbations revisited},
  author={Tommi Markkanen},
  journal={Journal of Cosmology and Astroparticle Physics},
  pages={001 - 001}
  • T. Markkanen
  • Published 6 December 2017
  • Physics
  • Journal of Cosmology and Astroparticle Physics
In this work we clarify aspects of renormalization on curved backgrounds focussing on the potential ramifications on the amplitude of inflationary perturbations. We provide an alternate view of the often used adiabatic prescription by deriving a correspondence between the adiabatic subtraction terms and traditional renormalization. Specifically, we show how adiabatic subtraction can be expressed as a set of counter terms that are introduced by redefining the bare parameters of the action. Our… 

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