Consistency relation and inflaton field redefinition in the δN formalism

Guillem Domènech, Jinn Ouk Gong, Misao Sasaki

Research output: Contribution to journalArticlepeer-review

6 Scopus citations


We compute for general single-field inflation the intrinsic non-Gaussianity due to the self-interactions of the inflaton field in the squeezed limit. We recover the consistency relation in the context of the δN formalism, and argue that there is a particular field redefinition that makes the intrinsic non-Gaussianity vanishing, thus improving the estimate of the local non-Gaussianity using the δN formalism.

Original languageEnglish
Pages (from-to)413-417
Number of pages5
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
StatePublished - 10 Jun 2017


Dive into the research topics of 'Consistency relation and inflaton field redefinition in the δN formalism'. Together they form a unique fingerprint.

Cite this