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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| Format: | Article |
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IOP Publishing
2012
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| Online Access: | https://eprints.nottingham.ac.uk/42143/ |