The covariance of multi-field perturbations, pseudo-susy and fNL

Saffin, Paul M.

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.

Citation

Saffin, P. M. (2012). The covariance of multi-field perturbations, pseudo-susy and fNL. Journal of Cosmology and Astroparticle Physics, 2012(9), Article 002. https://doi.org/10.1088/1475-7516/2012/09/002

• Journal Article Type: Article
• Acceptance Date: Aug 20, 2012
• Publication Date: Sep 4, 2012
• Deposit Date: Apr 24, 2017
• Publicly Available Date: Apr 24, 2017
• Journal: Journal of Cosmology and Astroparticle Physics
• Electronic ISSN: 1475-7516
• Publisher: IOP Publishing
• Peer Reviewed: Peer Reviewed
• Volume: 2012
• Issue: 9
• Article Number: 002
• DOI: https://doi.org/10.1088/1475-7516/2012/09/002
• Keywords: Cosmological perturbation theory
• Public URL: https://nottingham-repository.worktribe.com/output/711548
• Publisher URL: https://doi.org/10.1088/1475-7516/2012/09/002
• Additional Information: This is an author-created, un-copyedited version of an article accepted for publication/published; in Journal of Cosmology and Astroparticle Physics. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript orany version derived from it. The Version of Record is available online at https://doi.org/10.1088/1475-7516/2012/09/002
• Contract Date: Apr 24, 2017