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

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

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...

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Bibliographic Details
Main Author:	Saffin, Paul M.
Format:	Article
Published:	IOP Publishing 2012
Subjects:	Cosmological perturbation theory
Online Access:	https://eprints.nottingham.ac.uk/42143/

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