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

Saffin, Paul M. (2012) The covariance of multi-field perturbations, pseudo-susy and fNL. Journal of Cosmology and Astroparticle Physics, 2012 (09). 002/1-002/22. ISSN 1475-7516

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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.

Item Type: Article
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
Keywords: Cosmological perturbation theory
Schools/Departments: University of Nottingham, UK > Faculty of Science > School of Physics and Astronomy
Identification Number: 10.1088/1475-7516/2012/09/002
Depositing User: Saffin, Dr Paul
Date Deposited: 24 Apr 2017 12:41
Last Modified: 18 Oct 2017 18:09

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