Monday, March 5, 2012

1203.0397 (Paul M. Saffin)

The covariance of multi-field perturbations, pseudo-susy and f_NL    [PDF]

Paul M. Saffin
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.
View original: http://arxiv.org/abs/1203.0397

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