Potential reconstruction from general power spectrum in single-field inflation

Ki Young Choi, Jinn Ouk Gong, Su Beom Kang, Rathul Nath Raveendran

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


We suggest a new method to reconstruct, within canonical single-field inflation, the inflaton potential directly from the primordial power spectrum which may deviate significantly from near scale-invariance. Our approach relies on a more generalized slow-roll approximation than the standard one, and can probe the properties of the inflaton potential reliably. We give a few examples for reconstructing potential and discuss the validity of our method.

Original languageEnglish
Article number012
JournalJournal of Cosmology and Astroparticle Physics
Issue number1
StatePublished - Jan 2022

Bibliographical note

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© 2022 IOP Publishing Ltd and Sissa Medialab.


  • cosmological perturbation theory
  • inflation
  • physics of the early universe


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