Generation of perturbation after multi-field inflation
Astrophysics
2008-11-26 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We explore a new possibility that some inflaton fields in multi-field inflation models satisfy the observed value of the spectral index so that the curvature perturbation generated by them through post-inflationary dynamics may be relevant for the current observations. We illustrate this point using a simple and reasonable multi-field chaotic inflation model motivated from string theory. Possible non-Gaussianity and the tensor-to-scalar ratio are briefly addressed.
Cite
@article{arxiv.0706.3599,
title = {Generation of perturbation after multi-field inflation},
author = {Jinn-Ouk Gong},
journal= {arXiv preprint arXiv:0706.3599},
year = {2008}
}