Abstract
We construct explicit models of multifield inflation in which the primordial metric fluctuations do not necessarily obey Gaussian statistics. These models are realizations of mechanisms in which non-Gaussianity is first generated by a light scalar field and then transferred into curvature fluctuations. The probability distribution functions of the metric perturbation at the end of inflation are computed. This provides a guideline for designing strategies to search for non-Gaussian signals in future CMB and large scale structure surveys.
- Received 17 September 2002
DOI:https://doi.org/10.1103/PhysRevD.67.121301
©2003 American Physical Society