Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1840789 | Nuclear Physics B | 2012 | 19 Pages |
Abstract
We study the generation of the primordial curvature perturbation in multi-field inflation. Considering both the evolution of the perturbation during inflation and the effects generated at the end of inflation, we present a general formula for the curvature perturbation. We provide the analytic expressions of the power spectrum, spectral tilt and non-Gaussianity for the separable potentials of two inflaton scalars, and apply them to some specific models.
Related Topics
Physical Sciences and Engineering
Mathematics
Mathematical Physics
Authors
Ki-Young Choi, Soo A Kim, Bumseok Kyae,