Primordial scalar perturbations in tachyonic power-law inflation
General Relativity and Quantum Cosmology
2015-06-12 v2
Abstract
In this work we determine the power spectrum of the gravitational potential of the primordial fluctuations for an inflationary model whose \emph{inflaton} is a non-canonical scalar field of the tachyon-type. The respective background field equations for an inverse-square potential produce a power-law inflation, and it is explicitly shown that for such a potential the power spectrum tends to be scale-independent for highly accelerated regimes in the inflationary expansion.
Keywords
Cite
@article{arxiv.1301.4631,
title = {Primordial scalar perturbations in tachyonic power-law inflation},
author = {Rudinei C. de Souza and Gilberto M. Kremer},
journal= {arXiv preprint arXiv:1301.4631},
year = {2015}
}
Comments
4 pages. Version published in PRD