# Correlated primordial spectra in effective theory of inflation

## TL;DR

This paper derives a direct correlation between the power spectrum and bispectrum of primordial curvature perturbations using effective field theory, providing insights into inflationary models and their observational signatures.

## Contribution

It introduces a novel explicit correlation between the power spectrum and bispectrum within the effective field theory framework of inflation.

## Key findings

- Demonstrates correlated bispectra for feature models from Planck data
- Discusses the consistency relation in the context of these correlations
- Validates the explicit correlation between power spectrum and bispectrum

## 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.