Non-linear corrections to inflationary power spectrum

Jinn Ouk Gong, Hyerim Noh, Jai Chan Hwang

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


We study non-linear contributions to the power spectrum of the curvature perturbation on super-horizon scales, produced during slow-roll inflation driven by a canonical single scalar field. We find that on large scales the linear power spectrum dominates and leading non-linear corrections remain negligible, indicating that we can safely rely on linear perturbation theory to study inflationary power spectrum. We also briefly comment on the infrared and ultraviolet behaviour of the non-linear corrections.

Original languageEnglish
Article number004
JournalJournal of Cosmology and Astroparticle Physics
Issue number4
StatePublished - Apr 2011


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


Dive into the research topics of 'Non-linear corrections to inflationary power spectrum'. Together they form a unique fingerprint.

Cite this