Correlated primordial spectra in effective theory of inflation

Abstract

We derive a direct correlation between the power spectrum and bispectrum of the primordial curvature perturbation in terms of the Goldstone mode based on the effective field theory approach to inflation. We show examples of correlated bispectra for the parametrized feature models presented by the Planck collaboration. We also discuss the consistency relation and the validity of our explicit correlation between the power spectrum and bispectrum.

(v1) 14 pages, 1 figure; (v2) 15 pages, minor revision including more references and a footnote, to appear in Physical Review D

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Cited by in corpus (10)

• Planck 2018 results. X. Constraints on inflation
• A generalized non-Gaussian consistency relation for single field inflation
• Probing primordial features with next-generation photometric and radio surveys
• Constraints on inflation with LSS surveys: features in the primordial power spectrum
• Vanishing of local non-Gaussianity in canonical single field inflation
• Obviating PBH overproduction for SIGWs generated by Pulsar Timing Arrays in loop corrected EFT of bounce
• Regularized-Renormalized-Resummed loop corrected power spectrum of non-singular bounce with Primordial Black Hole formation
• Negative non-Gaussianity as a salvager for PBHs with PTAs in bounce
• Shapes and features of the primordial bispectrum
• Cross-tests of CMB features in the primordial spectra