The covariance of multi-field perturbations, pseudo-susy and f_NL
classification
✦ hep-th
astro-ph.COhep-ph
keywords
covarianceclarifycosmologicalderiveenforcingensuringexactexpressions
read the original abstract
We reconsider cosmological perturbation theory for multi-component scalars, enforcing covariance in field-space, and ensuring that phyical observations are independent of field re-definitions. We use the formalism to clarify some issues in the literature, and use pseudo-supersymmetry to derive exact expressions for terms of interest.
This paper has not been read by Pith yet.
Forward citations
Cited by 1 Pith paper
-
Orbital Inflation: inflating along an angular isometry of field space
Orbital Inflation reconstructs two-field actions with an angular isometry yielding single-field-like predictions that violate consistency relations and allow f_NL from slow-roll suppressed to O(few) depending on entro...
discussion (0)
Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.