The effects of a fast-turning trajectory in multiple-field inflation
Cosmology and Nongalactic Astrophysics
2015-06-18 v3 High Energy Physics - Theory
Abstract
The latest results from PLANCK impose strong constraints on features in the spectrum of the curvature perturbations from inflation. We analyse the possibility of particle production induced by sharp turns of the trajectory in field space in inflation models with multiple fields. Although the evolution of the background fields can be altered by particle production, we find rather modest changes in the power spectrum even for the most extreme case in which the entire kinetic energy of the scalar fields is converted into particles.
Keywords
Cite
@article{arxiv.1401.6163,
title = {The effects of a fast-turning trajectory in multiple-field inflation},
author = {Maciej Konieczka and Raquel H. Ribeiro and Krzysztof Turzynski},
journal= {arXiv preprint arXiv:1401.6163},
year = {2015}
}
Comments
33 pages, 6 figures, matches published version