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

Saffin, Paul M.

Authors

Paul M. Saffin



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.

Journal Article Type Article
Publication Date Sep 4, 2012
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
Institution Citation Saffin, P. M. (2012). The covariance of multi-field perturbations, pseudo-susy and fNL. Journal of Cosmology and Astroparticle Physics, 2012(9), doi:10.1088/1475-7516/2012/09/002
DOI https://doi.org/10.1088/1475-7516/2012/09/002
Keywords Cosmological perturbation theory
Publisher URL https://doi.org/10.1088/1475-7516/2012/09/002
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
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

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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