N-flation from multiple DBI type actions
High Energy Physics - Theory
2009-10-06 v1 Astrophysics
General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
Abstract
In this letter we present a new N-flation model constructed by making use of multiple scalar fields which are being described by their own DBI action. We show that the dependence of the e-folding number and of the curvature perturbation on the number of fields changes compared with the normal N-flation model. Our model is also quite different from the usual DBI N-flation which is still based on one DBI action but involves many moduli components. Some specific examples of our model have been analyzed.
Cite
@article{arxiv.0809.4134,
title = {N-flation from multiple DBI type actions},
author = {Yi-Fu Cai and Wei Xue},
journal= {arXiv preprint arXiv:0809.4134},
year = {2009}
}
Comments
4 pages, 1 figure