%0 Journal Article
%T Primordial scalar perturbations in tachyonic power-law inflation
%A Rudinei C. de Souza
%A Gilberto M. Kremer
%J Physics
%D 2013
%I arXiv
%R 10.1103/PhysRevD.89.027302
%X 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.
%U http://arxiv.org/abs/1301.4631v2