Scalar perturbations in p-nflation: the 3-form case
Cosmology and Nongalactic Astrophysics
2013-05-29 v4 General Relativity and Quantum Cosmology
High Energy Physics - Theory
Abstract
We calculate the primordial spectrum of scalar perturbations of the 3-form inflation and we find that the curvature perturbations decay at late times. As as result, although a non-minimally coupled massive 3-form field may drive inflation at early times, it should be assisted by other fields in order to reproduce the observed temperature fluctuations of the CMB sky.
Keywords
Cite
@article{arxiv.0908.0001,
title = {Scalar perturbations in p-nflation: the 3-form case},
author = {Cristiano Germani and Alex Kehagias},
journal= {arXiv preprint arXiv:0908.0001},
year = {2013}
}
Comments
13 pages; v4: clarifications added. Comment on the gravitational instability of 1- and 2-form inflation added. Version accepted in JCAP