Paul M. Saffin
The covariance of multi-field perturbations, pseudo-susy and fNL
Saffin, Paul M.
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|
|Peer Reviewed||Peer Reviewed|
|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|
|Keywords||Cosmological perturbation theory|
|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
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf